[Webkit-unassigned] [Bug 114268] New: [CSS Regions] Regions don't create a stacking context for their contents

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=114268

           Summary: [CSS Regions] Regions don't create a stacking context
                    for their contents
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mibalan at adobe.com
            Blocks: 57312


Created an attachment (id=197030)
 --> (https://bugs.webkit.org/attachment.cgi?id=197030&action=review)
W3C test showcasing the problem

The CSS Regions spec states that regions should create a stacking context for their contents.
However, it currently doesn't look like this is happening

Steps to reproduce:
Open attached file in browser

EXPECTED
The purple square is drawn on top of the other squares

ACTUAL
The purple square is drawn under the yellow square (actually under all the other three squares)

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