Elements with backface-visibility: hidden should not hit test on their back faces.
Created attachment 28290 [details] Patch, changelog
Comment on attachment 28290 [details] Patch, changelog The change looks fine, but it would be good to have some layout test. You said you'd add some over IRC, so I guess I'll r- this patch in expectation of one with tests!
Testcase added in r41440
Comment on attachment 28290 [details] Patch, changelog Looks fine with http://trac.webkit.org/browser/trunk/LayoutTests/transforms/3d/hit-testing/backface-hit-test.html?rev=41440 as the test case. Please mention the test case in the ChangeLog
http://trac.webkit.org/changeset/41441