[Webkit-unassigned] [Bug 164583] New: Video is displayed outside border of container with transform property set

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=164583

            Bug ID: 164583
           Summary: Video is displayed outside border of container with
                    transform property set
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: PC
                OS: Windows 7
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: regist_game at mail.ru
                CC: simon.fraser at apple.com

Created attachment 294340
  --> https://bugs.webkit.org/attachment.cgi?id=294340&action=review
Screenshot of problem page

I have an absolutely positioned container with 'transform: translateX(-50%) translateY(-50%)' and 'overflow: hidden' properties. Inside this container I have an absolutely positioned video and several absolutely positioned images. As you can see on the screenshot, 1 pixel of video is displayed to the right and to the bottom of the container, though overflowing part of the container content must be hidden.
Example is available at http://academy.spaceapp.ru/test.

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