[Webkit-unassigned] [Bug 122233] New: [mac][wk2] REGRESSION (Tiled Drawing): A variety of regions tests have overflow which is not accounted for, and fail

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=122233

           Summary: [mac][wk2] REGRESSION (Tiled Drawing): A variety of
                    regions tests have overflow which is not accounted
                    for, and fail
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: thorton at apple.com
                CC: hyatt at apple.com, mihnea at adobe.com, abucur at adobe.com


These tests:

fast/regions/percentage-margins-mixed-ltr-dominant-regions.html
fast/regions/percentage-margins-mixed-rtl-dominant-regions.html
fast/regions/percentage-margins-rtl-variable-width-regions.html
fast/regions/percentage-margins-variable-width-regions.html
fast/regions/frame-view-overflow-scroll.html

have content that ends up in the overflow of a region. When using tiled drawing (which Mac will be doing always, for WebKit2, after bug 121859), tiles that only intersect the aforementioned overflow but not the region itself don't paint the region, so the content of the overflow disappears. Hyatt says that region overflow is being actively changed, and to Cc: Adobe folks, so I did that.

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