[Webkit-unassigned] [Bug 100327] New: Clipping is incorrect for positioned composited elements inside clipping non-positioned ancestor.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=100327

           Summary: Clipping is incorrect for positioned composited
                    elements inside clipping non-positioned ancestor.
           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
                CC: bdakin at apple.com, dino at apple.com


Created an attachment (id=170550)
 --> (https://bugs.webkit.org/attachment.cgi?id=170550&action=review)
Testcase

The compositing clipping code is ignorant of the fact that clipping inside position: absolute/fixed things is special. overflow:hidden on a non-positioned ancestor does not clip a child position:fixed, but if that child is composited, we clip it.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.