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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - REGRESSION?: Frame scrollability tests are very flaky"
   href="https://bugs.webkit.org/show_bug.cgi?id=147300">147300</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>REGRESSION?: Frame scrollability tests are very flaky
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>528+ (Nightly build)
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Tools / Tests
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>ap&#64;webkit.org
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bfulgham&#64;webkit.org, simon.fraser&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>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 &lt;<a href="http://trac.webkit.org/r170270">http://trac.webkit.org/r170270</a>&gt;, which added one of these tests. Diff go like this:

&#64;&#64; -1,7 +1,5 &#64;&#64;
 (Frame scrolling node
   (scrollable area size 800 600)
   (contents size 800 600)
-  (non-fast-scrollable region
-    at (0,0) size 800x594)
 )


&#64;&#64; -1,7 +1,5 &#64;&#64;
 (Frame scrolling node
   (scrollable area size 800 600)
   (contents size 800 600)
-  (non-fast-scrollable region
-    at (0,166) size 280x434)
 )</pre>
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