Bug 176937 - [iOS] Scrolling -webkit-overflow-zooming:touch div when zoomed in scrolls the main page instead
Summary: [iOS] Scrolling -webkit-overflow-zooming:touch div when zoomed in scrolls the...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: Safari 10
Hardware: iPhone / iPad iOS 10.3
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2017-09-14 12:01 PDT by andrew.rousset
Modified: 2017-12-18 06:25 PST (History)
6 users (show)

See Also:

Attachments
HTML example file (746 bytes, text/html)
2017-09-14 12:01 PDT, andrew.rousset 		no flags Details
Movie demonstrating the issue (6.07 MB, video/quicktime)
2017-09-14 12:01 PDT, andrew.rousset 		no flags Details
View All Add an attachment (proposed patch, testcase, etc.)

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Description andrew.rousset 2017-09-14 12:01:19 PDT 
Created attachment 320800 [details]
HTML example file

Steps to reproduce:
1) Open the attachment in iOS Safari on iPad
2) Scroll the scrollable div a few times using scroll gestures (swipe up/down).
3) Zoom page in to any level greater than default view.
4) Perform scroll gesture on the scrollable div.

Expected result: Scrollable div should scroll each time a proper scroll gesture is performed. (Same behavior as default view of the scrollable div)
Actual result: Scrollable div will scroll sometimes, other times the page will be panned or scrolled. 

Notes: See CSS in simple html page attachment for scrolling setup. Also, see attached movie as well for demonstration of behavior.
Comment 1 andrew.rousset 2017-09-14 12:01:50 PDT 
Created attachment 320801 [details]
Movie demonstrating the issue
Comment 2 Radar WebKit Bug Importer 2017-09-14 12:27:51 PDT 
<rdar://problem/34439783>