[Webkit-unassigned] [Bug 150134] New: Full screen videos are hidden when a parent node has animation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=150134

            Bug ID: 150134
           Summary: Full screen videos are hidden when a parent node has
                    animation
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: Mac OS X 10.10
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: david.zhang at appdirect.com

Steps to reproduce:
1. Go to https://www.appdirect.com/apps/577#!overview
2. Click on "Watch Demo"
3. Click "Full screen" in the Youtube player

Expected:
Full screen video player

Actual:
Browser is full screen, video player is hidden

Workaround:
Either removing the animation/-webkit-animation property from the .adb-modal selector, or adding this CSS solves the problem:

:-webkit-full-screen-ancestor:not(iframe) {
    animation-name: none !important;
}

So I believe the problem is just that this style is missing from WebCore/css/fullscreen.css, since it already clears transform and transition for the same selector.

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