[Webkit-unassigned] [Bug 137024] New: [CSS Regions] Scrolling a region to a negative value (by "scroll bump") causes the box decorations of elements inside the regions to be cropped incorrectly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=137024

           Summary: [CSS Regions] Scrolling a region to a negative value
                    (by "scroll bump") causes the box decorations of
                    elements inside the regions to be cropped incorrectly
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: AdobeTracked
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: stavila at adobe.com
            Blocks: 57312


Created an attachment (id=238532)
 --> (https://bugs.webkit.org/attachment.cgi?id=238532&action=review)
Test-case

See attached test-case and screenshot.

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