Created attachment 231668 [details]
Borders disappear when hovering over cells in a table with hover effects on the cell and collapsed borders.
1) Load attached test case.
2) Hover over the leftmost cell, and then scan from left to right.
This was caused by <http://trac.webkit.org/changeset/154622>.
This is a pretty bad visual error. I think we should rollback the patch.
Please do - I can't provide a fix as I cannot get a working WebKit build going anymore.
Created attachment 232334 [details]
Created attachment 232382 [details]
Created attachment 232383 [details]
Committed r169532: <http://trac.webkit.org/changeset/169532>
Changed [ Failure ] to [ ImageOnlyFailure ] in r169535.