[Webkit-unassigned] [Bug 122335] New: [mac][wk2] dispatchAfterEnsuringUpdatedScrollPosition doesn't seem to always work

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=122335

           Summary: [mac][wk2] dispatchAfterEnsuringUpdatedScrollPosition
                    doesn't seem to always work
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: thorton at apple.com
                CC: ap at webkit.org, andersca at apple.com, sam at webkit.org,
                    simon.fraser at apple.com


http://trac.webkit.org/changeset/115751 made forceRepaintAsync use dispatchAfterEnsuringUpdatedScrollPosition. However, in https://bugs.webkit.org/show_bug.cgi?id=122299 (and in experiments with turning on tiled drawing for all tests), we've seen cases where even after waiting for a force repaint to finish, the main thread's notion of the scroll position can be wrong.

This probably blocks turning on threaded scrolling for all of the tests.

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