[Webkit-unassigned] [Bug 136397] New: Mask with visibility:hidden prevent descendants from becoming visible

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136397

           Summary: Mask with visibility:hidden prevent descendants from
                    becoming visible
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: simon.fraser at apple.com


Created an attachment (id=237391)
 --> (https://bugs.webkit.org/attachment.cgi?id=237391&action=review)
Testacase

The combination of a mask and visibility:hidden prevents a visibility:visible child from appearing. Bug does not occur without compositing.

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