The two functions EventHandler::bestClickableNodeForTouchPoint and EventHandler::bestZoomableAreaForTouchPoint does not correctly adjust for scroll-offset. Scroll-offset is only taking into account for calculating distance, but not in hit-testing or in returned adjusted values.
This is in case corrected in Internals to make the test-cases work, but it should be done generally.
Created attachment 141139 [details]
I just uploaded a revised patch for https://bugs.webkit.org/show_bug.cgi?id=85101, which takes the scroll offset/frame issues into account for chromium. But in light of this bug, I will have to re-revise.
Comment on attachment 141139 [details]
Clearing flags on attachment: 141139
Committed r116650: <http://trac.webkit.org/changeset/116650>
All reviewed patches have been landed. Closing bug.