[Webkit-unassigned] [Bug 87700] New: [Qt] New fast/dom/window-scroll-scaling.html made 3-400 tests flakey

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=87700

           Summary: [Qt] New fast/dom/window-scroll-scaling.html made
                    3-400 tests flakey
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Keywords: Qt, QtTriaged
          Severity: Critical
          Priority: P1
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ossy at webkit.org
                CC: jamesr at chromium.org, jknotten at chromium.org
            Blocks: 87494


fast/dom/window-scroll-scaling.html introduced in http://trac.webkit.org/changeset/118569
and it made 300-400 tests flakey on Qt with 1px differences:
http://build.webkit.sed.hu/results/x86-64%20Linux%20Qt%20Release/r118577%20%2837891%29/results.html

I tried to skip fast/dom/window-scroll-scaling.html locally 
and then everything works fine, as before r118569.

Have you got any idea what happened?

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