See http://lists.w3.org/Archives/Public/www-style/2012Aug/0156.html.
The CSSOM View spec currently requires Gecko's behavior.
Created attachment 268129 [details] Patch
Comment on attachment 268129 [details] Patch Attachment 268129 [details] did not pass mac-ews (mac): Output: http://webkit-queues.webkit.org/results/642468 New failing tests: imported/blink/compositing/overflow/rtl-overflow.html compositing/rtl/rtl-overflow-scrolling.html
Created attachment 268130 [details] Archive of layout-test-results from ews101 for mac-yosemite The attached test failures were seen while running run-webkit-tests on the mac-ews. Bot: ews101 Port: mac-yosemite Platform: Mac OS X 10.10.5
Comment on attachment 268129 [details] Patch Attachment 268129 [details] did not pass mac-wk2-ews (mac-wk2): Output: http://webkit-queues.webkit.org/results/642473 New failing tests: imported/blink/compositing/overflow/rtl-overflow.html compositing/rtl/rtl-overflow-scrolling.html
Created attachment 268131 [details] Archive of layout-test-results from ews106 for mac-yosemite-wk2 The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews. Bot: ews106 Port: mac-yosemite-wk2 Platform: Mac OS X 10.10.5
Comment on attachment 268129 [details] Patch Attachment 268129 [details] did not pass mac-debug-ews (mac): Output: http://webkit-queues.webkit.org/results/642466 New failing tests: imported/blink/compositing/overflow/rtl-overflow.html compositing/rtl/rtl-overflow-scrolling.html
Created attachment 268132 [details] Archive of layout-test-results from ews112 for mac-yosemite The attached test failures were seen while running run-webkit-tests on the mac-debug-ews. Bot: ews112 Port: mac-yosemite Platform: Mac OS X 10.10.5
https://trac.webkit.org/changeset/194514