Use Case === A scrollable overlay with kinetic scrolling enabled may be hidden with opacity: 0; and shown later (using a HWA'd transition/animation). As such, you want to disable pointer interaction with the modal while it is hidden by using pointer-events: none;. Problem === You will find that you cannot scroll the base page, because the user's pointer (finger) is still scrolling the invisible overlay. Expected Behavior === That scrolling action should not be registered by the overlay, going to the next interaction-enabled element below.
Tracked by <rdar://problem/14735863>. iOS bugs are tracked internally, so closing this.
Here is a condensed test: http://jsfiddle.net/brianblakely/t4ys2/ The darker "overlay" element is not scrollable in Safari/OS X, as expected. It scrolls in Safari/iOS, however, and blocks the "base" element's pointer input. Thanks!
Test fails in iOS 8 GM.
<rdar://problem/9671514>
Created attachment 280970 [details] Patch
Comment on attachment 280970 [details] Patch Attachment 280970 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/1475549 New failing tests: fast/scrolling/ios/touch-scroll-pointer-events-none.html
Created attachment 280972 [details] Archive of layout-test-results from ews125 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews125 Port: ios-simulator-wk2 Platform: Mac OS X 10.11.4
Created attachment 280973 [details] Patch for landing
Comment on attachment 280973 [details] Patch for landing Clearing flags on attachment: 280973 Committed r201901: <http://trac.webkit.org/changeset/201901>
All reviewed patches have been landed. Closing bug.
(In reply to comment #9) > Comment on attachment 280973 [details] > Patch for landing > > Clearing flags on attachment: 280973 > > Committed r201901: <http://trac.webkit.org/changeset/201901> It broke the Apple Windows build, see build.webkit.org for details.
just to document, Alex already fixed it in https://trac.webkit.org/changeset/201915