[Webkit-unassigned] [Bug 168823] New: Placing <video> in a region incorrectly positions the play button

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=168823

            Bug ID: 168823
           Summary: Placing <video> in a region incorrectly positions the
                    play button
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: graouts at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

An example of this is the test at fast/regions/inline-block-inside-anonymous-overflow-with-covered-controls.html. Look at this test compared to fast/regions/inline-block-inside-anonymous-overflow-with-covered-controls-expected.html in Safari (not in DRT since this test turns of modern media controls) and see the slight difference in positioning. This appears to be compositing-related since turning off the play button as a layer positions it correctly and getBoundingClientRect() doesn't return differences in layout between the two files.

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