[Webkit-unassigned] [Bug 93965] New: [CSS Regions] Region.regionOverset and visual overflow are incorrectly computed when content in the named flow is relatively positioned

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=93965

           Summary: [CSS Regions] Region.regionOverset and visual overflow
                    are incorrectly computed when content in the named
                    flow is relatively positioned
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mibalan at adobe.com


If the content in a named flow is relatively positioned (position: relative), then both the visual overflow and Element.regionOverset are incorrectly computed, as follows (this use-case assumes a region that will cause the content to overflow):
  * the part of the named flow that overflows the region gets clipped (as if the region would have «region-overflow: auto; overflow: hidden» set) - while it should actually overflow
  * region.regionOverset returns 'fit' - while it should return 'overset'

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