The following layout test is failing on XP:
Here is the regression rage:
It seems some margin or padding above the black rectangle is no longer rendered. I have not narrowed down the cause.
A similar problem has appeared in an overlapping revision range on Win7 (but not Win7 dbg):
I believe these spurious grey areas are related to bug 80517, so I rebaselined the Win results in r139823 and am closing this bug as a dup.
*** This bug has been marked as a duplicate of bug 80517 ***