Go to a page with a scrollable (in both dimensions) RTL div. Drag the vertical scroller. Notice how the horizontal scroller jumps all the way to the left.
Created attachment 277733 [details] Repro
This is important for the RTL Scrollbars work.
<rdar://problem/26013903>
Created attachment 277737 [details] Patch
Comment on attachment 277737 [details] Patch Attachment 277737 [details] did not pass mac-ews (mac): Output: http://webkit-queues.webkit.org/results/1241652 New failing tests: fast/scrolling/rtl-drag-vertical-scroller.html
Created attachment 277744 [details] Archive of layout-test-results from ews102 for mac-yosemite The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews102 Port: mac-yosemite Platform: Mac OS X 10.10.5
Comment on attachment 277737 [details] Patch Attachment 277737 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.webkit.org/results/1241676 New failing tests: fast/scrolling/rtl-drag-vertical-scroller.html
Created attachment 277747 [details] Archive of layout-test-results from ews105 for mac-yosemite-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: ews105 Port: mac-yosemite-wk2 Platform: Mac OS X 10.10.5
Comment on attachment 277737 [details] Patch Attachment 277737 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/1241683 New failing tests: fast/scrolling/rtl-drag-vertical-scroller.html
Created attachment 277749 [details] Archive of layout-test-results from ews125 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews125 Port: ios-simulator-wk2 Platform: Mac OS X 10.11.4
Comment on attachment 277737 [details] Patch Attachment 277737 [details] did not pass mac-debug-ews (mac): Output: http://webkit-queues.webkit.org/results/1241712 New failing tests: fast/scrolling/rtl-drag-vertical-scroller.html
Created attachment 277754 [details] Archive of layout-test-results from ews117 for mac-yosemite The attached test failures were seen while running run-webkit-tests on the mac-debug-ews. Bot: ews117 Port: mac-yosemite Platform: Mac OS X 10.10.5
Oh, this test should be marked as failing on these OSes.
Created attachment 277767 [details] Patch
Comment on attachment 277767 [details] Patch r-: the test should work everywhere.
Created attachment 277771 [details] Patch
Created attachment 277773 [details] Patch for committing
Created attachment 277775 [details] Patch for committing
Comment on attachment 277771 [details] Patch Attachment 277771 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/1242392 New failing tests: fast/scrolling/rtl-drag-vertical-scroller.html
Created attachment 277778 [details] Archive of layout-test-results from ews123 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews123 Port: ios-simulator-wk2 Platform: Mac OS X 10.11.4
Comment on attachment 277775 [details] Patch for committing Attachment 277775 [details] did not pass ios-sim-ews (ios-simulator-wk2): Output: http://webkit-queues.webkit.org/results/1242393 New failing tests: fast/scrolling/rtl-drag-vertical-scroller.html
Created attachment 277779 [details] Archive of layout-test-results from ews125 for ios-simulator-wk2 The attached test failures were seen while running run-webkit-tests on the ios-sim-ews. Bot: ews125 Port: ios-simulator-wk2 Platform: Mac OS X 10.11.4
Created attachment 277786 [details] Patch for committing
Comment on attachment 277786 [details] Patch for committing Clearing flags on attachment: 277786 Committed r200282: <http://trac.webkit.org/changeset/200282>