[Webkit-unassigned] [Bug 147300] New: REGRESSION?: Frame scrollability tests are very flaky

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=147300

            Bug ID: 147300
           Summary: REGRESSION?: Frame scrollability tests are very flaky
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ap at webkit.org
                CC: bfulgham at webkit.org, simon.fraser at apple.com

These tests are very flaky on all Mac WK2 bots:

platform/mac-wk2/tiled-drawing/scrolling/frames/frameset-frame-scrollability.html
platform/mac-wk2/tiled-drawing/scrolling/frames/frameset-nested-frame-scrollability.html

Possibly started with <http://trac.webkit.org/r170270>, which added one of these tests. Diff go like this:

@@ -1,7 +1,5 @@
 (Frame scrolling node
   (scrollable area size 800 600)
   (contents size 800 600)
-  (non-fast-scrollable region
-    at (0,0) size 800x594)
 )


@@ -1,7 +1,5 @@
 (Frame scrolling node
   (scrollable area size 800 600)
   (contents size 800 600)
-  (non-fast-scrollable region
-    at (0,166) size 280x434)
 )

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