[Webkit-unassigned] [Bug 124844] New: [CSS Regions] Autoheight region has incorrect height when previous region has a fixed size and content has forced break

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=124844

           Summary: [CSS Regions] Autoheight region has incorrect height
                    when previous region has a fixed size and content has
                    forced break
           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
                CC: WebkitBugTracker at adobe.com
            Blocks: 57312


Created an attachment (id=217810)
 --> (https://bugs.webkit.org/attachment.cgi?id=217810&action=review)
Test-case

When the margin of an element with region-break-after: always slightly overflows a region with a specified height, the next region gets an incorrect height if it has height: auto;

REPRODUCTION:
In the attached sample file, resize the window so that the text in the first region is laid out on two lines.

EXPECTED
The second region is as tall as the last two paragraphs.

ACTUAL
Second region is very short and content overflows.

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