The following layout test is failing on Mountain Lion.
Probable cause: The cause is totally non obvious. We have a few of these, where a single pixel, or a few pixels, of text differ. I think the only solution is to have some allowed fuzziness.
Works for me on today's nightly (r151543)
Reopening - we'd like to know when it got fixed and how.
This test was added by the fix for the bug 105641, which just avoided the clearing issues limiting the selection to the region boundaries.
I've proposed a new solution in the bug 119622, so perhaps adding a dependency on that bug would be a good idea.
Besides adding the dependency on bug 119622, which was already FIXED, I think we can close this bug as well.
As explained in comment #3 and #4 the test is passing again.