Bug 15459 – Flash content grabs mouse pointer when it is hovering above Safari chrome (status bar, scroll bars, tabs)

• Component: Layout and Rendering
• Status: RESOLVED WORKSFORME

[Ain Tohvri]

Occasionally in cases where you've got multiple tabs in a browser and underneath a tab is a certain link (not just any link), it changes a mouse cursor into a pointer (see the screenshot).

I found this while moving around Google Analytics. Left link block there seems to bring that issue up nicely.

[Ain Tohvri]

Created attachment 16619 [details]
Pointer on the tab

[Ain Tohvri]

Deleting preferences seems to resolve the weirdness

[Ain Tohvri]

The issue is there for the latest nightly

[Ain Tohvri]

Created attachment 16964 [details]
Page renders through the tabs

[Ain Tohvri]

Comment on attachment 16964 [details]
Page renders through the tabs

You can see the Analytics Site Usage area there (Flash) that follows the cursor movement on tabs.

It only happens if the particular Flash area is behind the tabs.

[Ain Tohvri]

Deleting the preference lists for both Safari and WebKit didn't make any difference

[David Kilzer (:ddkilzer)]

This sound very familiar.  Does it happen when the Flash content is behind a vertical or horizontal scrollbar as well?

May be related to this radar:  <rdar://problem/5361894>

[David Kilzer (:ddkilzer)]

Actually, Flash is able to grab the mouse pointer above any of the following Safari chrome:

- vertical scroll bar
- horizontal scroll bar
- status bar (must be turned on)
- resize thumb (lower right-hand corner of the window)
- tab bar
- bookmarks bar (only the bottom half of its height)

[David Kilzer (:ddkilzer)]

Created attachment 16967 [details]
Test case (download and extract)

You may need to change the height of the <div> elements and resize your browser window to make certain Safari chrome elements render "over" the Flash content, but the way this Flash ad works, it hides the mouse pointer, causing very odd behavior.

[David Kilzer (:ddkilzer)]

<rdar://problem/5361894>

[David Kilzer (:ddkilzer)]

Not sure if this bug is in Safari or WebKit.  May be a combination of both (since WebKit draws the scroll bars, but Safari draws the other elements).

[Ain Tohvri]

Looks like the issue has been addressed in Safari 4.0.4.

It works for me on the latest nightly, version 4.0.4 (6531.21.10, r53677). Please confirm.

[David Kilzer (:ddkilzer)]

(In reply to comment #12)
> Looks like the issue has been addressed in Safari 4.0.4.
> 
> It works for me on the latest nightly, version 4.0.4 (6531.21.10, r53677).
> Please confirm.

I concur that this has been fixed in Safari 4.0.4.

[David Kilzer (:ddkilzer)]

(In reply to comment #13)
> (In reply to comment #12)
> > Looks like the issue has been addressed in Safari 4.0.4.
> > 
> > It works for me on the latest nightly, version 4.0.4 (6531.21.10, r53677).
> > Please confirm.
> 
> I concur that this has been fixed in Safari 4.0.4.

Actually I think this was fixed by Flash 10 rather than Safari 4.0.4.