Bug 210071 – Trackpad and Mouse scroll events on iPad only fire "pointermove" -- not "wheel"

• Status: RESOLVED
• Resolution: FIXED
• Component: UI Events

When scrolling with a trackpad/mouse on iPadOS 13.4, the browser only fires `pointermove` events. These events are not sufficient to simulate scroll interactions where a `deltaY` and deltaX are needed and `pointermove` is useless because the cursor is stationary. WebKit should fire `wheel` events!

[Radar WebKit Bug Importer]

<rdar://problem/61403043>

[Tim Horton]

You are not wrong!

[Tim Horton]

If you know of specific sites that are impacted, please share. We are aware of the lack of wheel events.

Maybe not what you're looking for, but complex interfaces like the one linked below typically handle scrolling manually. These applications are usually behind logins which makes it difficult for me to share more examples. 

https://vscode-web-test-playground.azurewebsites.net/?enter=true

[Sebastian]

Since moogcharlies example is no longer online, here is a docker instance of the code-server editor that demonstrates the behaviour: 

http://vultr01.p2lab.com:8080
password: b174c59894a38db016661d57

Just open the file ./project/lorem.txt and try to scroll with two fingers. 

I replicated the issue using the trackpad on the iPad Magic Keyboard on the 2020 iPad Pro with iPadOS 13.4 installed.

[Alexandre Santos]

This is happening in more projects than I realized. Hope soon I can do more work done with iPadOS and trackpad.

Can be reproduced easily here: https://ace.c9.io/build/kitchen-sink.html

I would love to code more with my iPad Pro + Magic Keyboard :)

[Jaimyn]

Just wanted to say I’ve been trying to use code-server (in browser VS Code) and this bug is unfortunately a show stopper. It would be great to be able to use my iPad and magic keyboard to code in the browser. :)

[KR]

Same here, iPad iOS 14 user with magic keyboard, code-server is not usable as it requires constantly touching the screen for scrolling.
Also overleaf.com, the most prominent online Latex editor, has the same issue: scrolling with the trackpad results in the whole page scrolling instead of the code editor window (free accounts available if testing needed), the PDF preview window works fine instead.
Is there a way to prioritize this? As the availability of native apps of this kind is constrained on the iPad, these web solutions are critical to a more serious use of the iPad...

[J.R.]

This, alongside the fact that I also can‘t use a third party browser engine on iOS which would behave differently, frustrates me to a point that I consider returning my newly bought iPad Pro + Magic Keyboard, as I can‘t really do the productive work I was hoping to do on it.

[KR]

This ticket should be updated: the issue persists with iOS 14 latest.

[Anmol Sethi]

Could reproduce this within the iOS simulator with a debug build of master. Scrolling doesn't work on https://ace.c9.io/build/kitchen-sink.html!

As far as I can tell I can't build webkit for iPad and run it on there directly so I assume there's some closed source code related to running WebKit on iOS devices.

But since I can reproduce in the simulator, the bug/problem is very likely in the open source code so hopefully I can contribute a fix.

[Tim Horton]

(In reply to Anmol Sethi from comment #12)
> But since I can reproduce in the simulator, the bug/problem is very likely
> in the open source code so hopefully I can contribute a fix.

While ordinarily I would welcome and encourage help implementing this missing feature, fixing this particular thing in a performant way (without e.g. synchronous IPC on every scroll event) is going to involve coordination with other parts of iOS, so would be pretty tricky to work on as an open source patch (but you are definitely welcome and encouraged to contribute to WebKit in other ways if you want!).

Also, do know that while I can't comment on the timing of fixes, I am absolutely aware of this and know that it is important.

[Ian Ownbey]

This is also broken on the web IDE for Ethereum Studio (iPad Air with magic keyboard iPad OS 14.2) https://studio.ethereum.org/5fa8653126b473001237039f?openFile=contracts/HelloWorld.sol

[Tim Horton]

Created attachment 415851 [details]
Patch

[Tim Horton]

Test is incomplete, and there are a few weird bugs, but we can start the review process.

[Tim Horton]

Created attachment 415852 [details]
Patch

[Tim Horton]

Separately we should see if there are any normal wheel event layout tests we can turn on.

[Tim Horton]

Created attachment 415853 [details]
Patch

[Tim Horton]

Created attachment 415856 [details]
Patch

[Tim Horton]

Comment on attachment 415856 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=415856&action=review

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1649
> +        completion(false);

s/false/NO/

> Source/WebKit/UIProcess/WebPageProxy.cpp:2640
> +void WebPageProxy::dispatchWheelEventWithoutScrolling(const WebWheelEvent& event, bool isFirstEventInGesture, bool hasNonPassiveWheelHandlers, CompletionHandler<void(bool)>&& completionHandler)

Simon is going to want real types for the arguments probably

> Tools/TestWebKitAPI/Tests/ios/WKScrollViewTests.mm:124
> +        "<style>#scrollable { width: 200px; height: 200px; }</style>"

Not actually scrollable, probably shouldn't use that name.

[Tim Horton]

(In reply to Tim Horton from comment #16)
> Test is incomplete, and there are a few weird bugs, but we can start the
> review process.

Weird bugs (for follow ups):
- moogmusic + various custom test pages work, Zara and VSCode don't. Not sure why.
- Sometimes when rubber-banding with outstanding async scroll events, the scroll view buzzes between two scroll offsets. This might not be our bug.

[Simon Fraser (smfr)]

Comment on attachment 415856 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=415856&action=review

> Source/WTF/wtf/PlatformEnableCocoa.h:639
> +#if !defined(ENABLE_WHEEL_EVENT_REGIONS) && (PLATFORM(IOS) || PLATFORM(MACCATALYST))
> +#define ENABLE_WHEEL_EVENT_REGIONS 1
> +#endif

Can't you just combine this with the:
#if !defined(ENABLE_WHEEL_EVENT_REGIONS) && PLATFORM(MAC)
#define ENABLE_WHEEL_EVENT_REGIONS 1
#endif

higher up?

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1602
> +    WebCore::IntPoint scrollLocation = WebCore::roundedIntPoint([scrollEvent locationInView:_contentView.get()]);

Is this right with insets, zooming etc etc?

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1605
> +    bool hasPassiveWheelHandlers = eventListeners.contains(WebCore::EventListenerRegionType::Wheel);

This isn't the region of passive handlers. This is the region of all handlers, so this should be hasWheelHandlers

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1606
> +    bool hasNonPassiveWheelHandlers = eventListeners.contains(WebCore::EventListenerRegionType::NonPassiveWheel);

This region is the subset with active handlers.

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1608
> +    if (!hasPassiveWheelHandlers && !hasNonPassiveWheelHandlers) {

I think you only want to early return on ! hasWheelHandlers

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1613
> +    if (scrollEvent.phase == UIScrollPhaseMayBegin) {

Test this before paying the cost of looking at regions?

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1622
> +    bool isPreventable = hasNonPassiveWheelHandlers && _currentScrollGestureWasInitiallyPrevented.valueOr(isFirstEventInGesture);

We call this Cancelable

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1625
> +    WebKit::WebWheelEvent event = {

Can we share this with other WebWheelEvent building code? It would be easy to get things wrong, e.g. approximateWallTime(). How are there no phases passed down?

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1636
> +    _page->dispatchWheelEventWithoutScrolling(event, isFirstEventInGesture, hasNonPassiveWheelHandlers, [weakSelf = WeakObjCPtr<WKWebView>(self), strongCompletion = makeBlockPtr(completion), isPreventable, isFirstEventInGesture](bool handled) {

isFirstEventInGesture should be available by inspecting the event

> Source/WebKit/UIProcess/PageClient.h:473
> +    virtual void handleAsynchronousPreventableScrollEvent(UIScrollView *, UIScrollEvent *, void (^completion)(BOOL handled)) = 0;

Having Objective-C in this header seems wrong?
Cancelable

> Source/WebKit/UIProcess/RemoteLayerTree/ios/ScrollingTreeScrollingNodeDelegateIOS.h:69
> +    void handleAsynchronousPreventableScrollEvent(UIScrollView *, UIScrollEvent *, void (^completion)(BOOL handled));

Cancelable

> Source/WebKit/UIProcess/WebPageProxy.h:1838
> +    void dispatchWheelEventWithoutScrolling(const WebWheelEvent&, bool isFirstEventInGesture, bool hasNonPassiveWheelHandlers, CompletionHandler<void(bool)>&&);

Instead of the "WithoutScrolling" can you pass OptionSet<WheelEventProcessingSteps> ?

> Source/WebKit/WebProcess/WebPage/WebPage.cpp:2886
> +    bool isPreventable = hasNonPassiveWheelHandlers && m_currentScrollGestureWasInitiallyPrevented.valueOr(isFirstEventInGesture);

isCancelable

> Source/WebKit/WebProcess/WebPage/WebPage.h:1374
> +    void dispatchWheelEventWithoutScrolling(const WebWheelEvent&, bool isFirstEventInGesture, bool hasNonPassiveWheelHandlers, CompletionHandler<void(bool)>&&);

Let's call them activeHandlers

> Source/WebKit/WebProcess/WebPage/WebPage.h:2187
> +    Optional<bool> m_currentScrollGestureWasInitiallyPrevented;

I think this is just an alias of EventHandler's     Optional<WheelScrollGestureState> m_wheelScrollGestureState ? Can you avoid storing state in two places?

[Tim Horton]

(In reply to Simon Fraser (smfr) from comment #23)
> Comment on attachment 415856 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=415856&action=review
> 
> > Source/WTF/wtf/PlatformEnableCocoa.h:639
> > +#if !defined(ENABLE_WHEEL_EVENT_REGIONS) && (PLATFORM(IOS) || PLATFORM(MACCATALYST))
> > +#define ENABLE_WHEEL_EVENT_REGIONS 1
> > +#endif
> 
> Can't you just combine this with the:
> #if !defined(ENABLE_WHEEL_EVENT_REGIONS) && PLATFORM(MAC)
> #define ENABLE_WHEEL_EVENT_REGIONS 1
> #endif
> 
> higher up?

Sure.

> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1602
> > +    WebCore::IntPoint scrollLocation = WebCore::roundedIntPoint([scrollEvent locationInView:_contentView.get()]);
> 
> Is this right with insets, zooming etc etc?

It's always in content coordinates. It seems to work perfectly with insets and scrolling and zooming.

> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1605
> > +    bool hasPassiveWheelHandlers = eventListeners.contains(WebCore::EventListenerRegionType::Wheel);
> 
> This isn't the region of passive handlers. This is the region of all
> handlers, so this should be hasWheelHandlers

Ah!

> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1606
> > +    bool hasNonPassiveWheelHandlers = eventListeners.contains(WebCore::EventListenerRegionType::NonPassiveWheel);
> 
> This region is the subset with active handlers.
> 
> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1608
> > +    if (!hasPassiveWheelHandlers && !hasNonPassiveWheelHandlers) {
> 
> I think you only want to early return on ! hasWheelHandlers

Oh! Not a correctness problem, just unnecessary. Will change!

> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1613
> > +    if (scrollEvent.phase == UIScrollPhaseMayBegin) {
> 
> Test this before paying the cost of looking at regions?

Of course.

> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1622
> > +    bool isPreventable = hasNonPassiveWheelHandlers && _currentScrollGestureWasInitiallyPrevented.valueOr(isFirstEventInGesture);
> 
> We call this Cancelable

Sure!

> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1625
> > +    WebKit::WebWheelEvent event = {
> 
> Can we share this with other WebWheelEvent building code? It would be easy
> to get things wrong, e.g. approximateWallTime(). How are there no phases
> passed down?

I will look. I don't think we /need/ the phases, where this is going, but since it appears they are accurate, we can plumb them along?

> > Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1636
> > +    _page->dispatchWheelEventWithoutScrolling(event, isFirstEventInGesture, hasNonPassiveWheelHandlers, [weakSelf = WeakObjCPtr<WKWebView>(self), strongCompletion = makeBlockPtr(completion), isPreventable, isFirstEventInGesture](bool handled) {
> 
> isFirstEventInGesture should be available by inspecting the event

Only if we plumb the phases :)

> > Source/WebKit/UIProcess/PageClient.h:473
> > +    virtual void handleAsynchronousPreventableScrollEvent(UIScrollView *, UIScrollEvent *, void (^completion)(BOOL handled)) = 0;
> 
> Having Objective-C in this header seems wrong?
> Cancelable

Which ObjC! We've got other ObjC ptrs (and they're valid in C) and blocks are C.

> > Source/WebKit/UIProcess/RemoteLayerTree/ios/ScrollingTreeScrollingNodeDelegateIOS.h:69
> > +    void handleAsynchronousPreventableScrollEvent(UIScrollView *, UIScrollEvent *, void (^completion)(BOOL handled));
> 
> Cancelable

Sure OK :D

> > Source/WebKit/UIProcess/WebPageProxy.h:1838
> > +    void dispatchWheelEventWithoutScrolling(const WebWheelEvent&, bool isFirstEventInGesture, bool hasNonPassiveWheelHandlers, CompletionHandler<void(bool)>&&);
> 
> Instead of the "WithoutScrolling" can you pass
> OptionSet<WheelEventProcessingSteps> ?

Here's the reason I didn't: after the first event in a gesture, there is a time window before the UI process knows if it was handled or not, in which we might get more events (and send them to the WP). The WP already knows whether we need to Blocking or NonBlocking, but the UI process doesn't.

So I could send empty vs. MainThreadForScrolling/ScrollingThread, and have the WP add the DOMEventDispatch ones, but can't send a fully formed WheelEventProcessingSteps (and honestly, the MainThreadForScrolling/ScrollingThread ones would be a bit weird for the UI process to deal in too, though I'd never be sending those).

Thoughts?

> > Source/WebKit/WebProcess/WebPage/WebPage.cpp:2886
> > +    bool isPreventable = hasNonPassiveWheelHandlers && m_currentScrollGestureWasInitiallyPrevented.valueOr(isFirstEventInGesture);
> 
> isCancelable
> 
> > Source/WebKit/WebProcess/WebPage/WebPage.h:1374
> > +    void dispatchWheelEventWithoutScrolling(const WebWheelEvent&, bool isFirstEventInGesture, bool hasNonPassiveWheelHandlers, CompletionHandler<void(bool)>&&);
> 
> Let's call them activeHandlers

OK!

> > Source/WebKit/WebProcess/WebPage/WebPage.h:2187
> > +    Optional<bool> m_currentScrollGestureWasInitiallyPrevented;
> 
> I think this is just an alias of EventHandler's    
> Optional<WheelScrollGestureState> m_wheelScrollGestureState ? Can you avoid
> storing state in two places?

Will check!

[Tim Horton]

Created attachment 415951 [details]
Patch

[Tim Horton]

Created attachment 415975 [details]
Patch

[Simon Fraser (smfr)]

Comment on attachment 415975 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=415975&action=review

> Source/WebKit/ChangeLog:29
> +        If the event is not preventable, we will synchronously reply that it was

cancelable

> Source/WebKit/Shared/ios/WebIOSEventFactory.mm:162
> +        WebKit::WebEvent::Wheel, scrollLocation, scrollLocation, delta, { } /* wheelTicks */, WebKit::WebWheelEvent::Granularity::ScrollByPixelWheelEvent, false, toWebPhase(event.phase), WebKit::WebWheelEvent::PhaseNone, true, 1, delta, { }, MonotonicTime::fromRawSeconds(event.timestamp).approximateWallTime()

I would put this one per line but  ¯\_(ツ)_/¯

> Source/WebKit/UIProcess/API/Cocoa/WKWebViewInternal.h:232
> +    Optional<bool> _currentScrollGestureWasInitiallyPrevented;

Can this be a Optional<WheelScrollGestureState>?

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1627
> +        if (!strongSelf)
> +            return;

Is it OK to not call the completion handler here?

> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1629
> +        if (isCancelable) {

OK to not call strongCompletion() if not cancelable?

[Tim Horton]

Comment on attachment 415975 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=415975&action=review

>> Source/WebKit/Shared/ios/WebIOSEventFactory.mm:162
>> +        WebKit::WebEvent::Wheel, scrollLocation, scrollLocation, delta, { } /* wheelTicks */, WebKit::WebWheelEvent::Granularity::ScrollByPixelWheelEvent, false, toWebPhase(event.phase), WebKit::WebWheelEvent::PhaseNone, true, 1, delta, { }, MonotonicTime::fromRawSeconds(event.timestamp).approximateWallTime()
> 
> I would put this one per line but  ¯\_(ツ)_/¯

Heh, I had it one per line and thought someone would not like it. I'll put it back!

>> Source/WebKit/UIProcess/API/Cocoa/WKWebViewInternal.h:232
>> +    Optional<bool> _currentScrollGestureWasInitiallyPrevented;
> 
> Can this be a Optional<WheelScrollGestureState>?

Why not!

>> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1627
>> +            return;
> 
> Is it OK to not call the completion handler here?

Guess we should probably still call it. Don't think it matters.

>> Source/WebKit/UIProcess/API/ios/WKWebViewIOS.mm:1629
>> +        if (isCancelable) {
> 
> OK to not call strongCompletion() if not cancelable?

If it's not cancelable, we called it synchronously below!!

[Tim Horton]

Created attachment 416045 [details]
Patch

[EWS]

Committed r270712: <https://trac.webkit.org/changeset/270712>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 416045 [details].

[Ryan Haddad]

Follow up build fix in https://trac.webkit.org/changeset/270759/webkit

[Lei Zhang]

(In reply to Tim Horton from comment #29)
> Created attachment 416045 [details]
> Patch

hi, Tim. Will this patch take effect in the next iPadOS version?

[KR]

Is it confirmed that the (In reply to Tim Horton from comment #22)
> (In reply to Tim Horton from comment #16)
> > Test is incomplete, and there are a few weird bugs, but we can start the
> > review process.
> 
> Weird bugs (for follow ups):
> - moogmusic + various custom test pages work, Zara and VSCode don't. Not
> sure why.
> - Sometimes when rubber-banding with outstanding async scroll events, the
> scroll view buzzes between two scroll offsets. This might not be our bug.

Is it confirmed that the final fix solves the vscode issue?
It's not clear whether this comment still applies or not.

Can be tested at:
https://vscode-web-test-playground.azurewebsites.net/?enter=true

Thank you

[Tim Horton]

(In reply to KR from comment #33)
> Is it confirmed that the (In reply to Tim Horton from comment #22)
> > (In reply to Tim Horton from comment #16)
> > > Test is incomplete, and there are a few weird bugs, but we can start the
> > > review process.
> > 
> > Weird bugs (for follow ups):
> > - moogmusic + various custom test pages work, Zara and VSCode don't. Not
> > sure why.
> > - Sometimes when rubber-banding with outstanding async scroll events, the
> > scroll view buzzes between two scroll offsets. This might not be our bug.
> 
> Is it confirmed that the final fix solves the vscode issue?
> It's not clear whether this comment still applies or not.
> 
> Can be tested at:
> https://vscode-web-test-playground.azurewebsites.net/?enter=true
> 
> Thank you

Yeah, there was a follow up that fixed VSCode IIRC: https://trac.webkit.org/changeset/271000/webkit

[[e-mail]]

Hi,

VS Code engineer here.
This does not seem fixed on my iPad 14.4.2 and one of my colleagues tried 14.5 beta 2 and there it is also not fixed.
Which iPad version should contain this fix?

For reference here's the related VS Code issue https://github.com/microsoft/vscode/issues/106232

[[e-mail]]

Hi,

VS Code engineer here.
This does not seem fixed on my iPad 14.4.2 and one of my colleagues tried 14.5 beta 2 and there it is also not fixed.
Which iPad version should contain this fix?

For reference here's the related VS Code issue https://github.com/microsoft/vscode/issues/106232

[Tim Horton]

(In reply to [e-mail] from comment #36)
> Hi,
> 
> VS Code engineer here.
> This does not seem fixed on my iPad 14.4.2 and one of my colleagues tried
> 14.5 beta 2 and there it is also not fixed.
> Which iPad version should contain this fix?
> 
> For reference here's the related VS Code issue
> https://github.com/microsoft/vscode/issues/106232

The link above (https://vscode-web-test-playground.azurewebsites.net/?enter=true) works fine for me on the iOS 14.5 beta. I would expect it to work in beta 2, though don't have that handy to test. Can you test again with a more recent beta? (I can confirm that all of these changes are /not/ in iOS 14.4.x)

[Tim Horton]

(In reply to Tim Horton from comment #37)
> (In reply to [e-mail] from comment #36)
> > Hi,
> > 
> > VS Code engineer here.
> > This does not seem fixed on my iPad 14.4.2 and one of my colleagues tried
> > 14.5 beta 2 and there it is also not fixed.
> > Which iPad version should contain this fix?
> > 
> > For reference here's the related VS Code issue
> > https://github.com/microsoft/vscode/issues/106232
> 
> The link above
> (https://vscode-web-test-playground.azurewebsites.net/?enter=true) works
> fine for me on the iOS 14.5 beta. I would expect it to work in beta 2,
> though don't have that handy to test. Can you test again with a more recent
> beta? (I can confirm that all of these changes are /not/ in iOS 14.4.x)

Also, when testing: I'm not sure if this is a VSCode bug or a WebKit bug, but you seem to need to focus the text editor before it will scroll.

[[e-mail]]

Thanks a lot for your quick reply!
I have updated iPad to latest 14.5 beta and I can confirm that this indeed has been fixed.
I see the issue that the VS Code Editor has to be focused in order for this to work, for that I will continue the discussion in the VS Code issue

[[e-mail]]

A community member gave me a good tip:
once the address bar is hidden on Safari you can nicely scroll in the editor even before clicking it. This also allows other parts of the UI to be scrolled.

Why would the Safari address bar influence scrolling?
Is it possible that the address bar somehow eats up the scroll events?

[Tim Horton]

(In reply to [e-mail] from comment #39)
> Thanks a lot for your quick reply!
> I have updated iPad to latest 14.5 beta and I can confirm that this indeed
> has been fixed.

Great!

> I see the issue that the VS Code Editor has to be focused in order for this
> to work, for that I will continue the discussion in the VS Code issue

Less great!

(In reply to [e-mail] from comment #40)
> A community member gave me a good tip:
> once the address bar is hidden on Safari you can nicely scroll in the editor
> even before clicking it. This also allows other parts of the UI to be
> scrolled.
> 
> Why would the Safari address bar influence scrolling?
> Is it possible that the address bar somehow eats up the scroll events?

In a simple test page, as well as other complicated live pages, I still get `wheel` events when the Safari UI is not squished, so I don't think this is a universal problem. Maybe it's content specific? Anyway, if it turns out to be a WebKit thing, please definitely file a new bug and Cc me!

[[e-mail]]

Sorry for the slow reply, I was side-tracked.
So this seems somewhat connected to https://github.com/microsoft/vscode/issues/122653

I plan to investigate further on our side, but it seems there are two modes:
1) When the keyboard appears and editor is read write. Then mouse scrolling works, however mouse selection does not work
2) When the editor is read only and there is no keyboard it is the opposite. Mouse scrolling does not work, however mouse selection works

[[e-mail]]

Created this one for missing wheel events https://bugs.webkit.org/show_bug.cgi?id=226080
Created this one for the selection https://bugs.webkit.org/show_bug.cgi?id=226082
Though we have a workaround for that one