This may be a dupe of bug 379505. This is a spinoff from bug 379474 comment 18. This is also a regression introduced by that, I think. See testcase - the border and the background do not match, and there is a large space between the border and the background. There should be no such space. Broken with 20070513/trunk, works fine with 20070428/trunk - and bz told me to file this, so I trust him on the regression cause :)

Sorry, I meant bug 368247 instead of 368247 for the regression cause.

Notes: 1. radius between background rounding and border rounding differs (see testcase 1) 2. border-colors and -moz-border-*-colors use different radius? (see testcase 2) 3. when -moz-border-*-colors is used suddenly also the background is not rounded anymore (separate bug?) (testcase 3)

Item 3 is a known very old bug, that's been filed for years.

Fixed by checked-in patch from bug 368247. 1 and 2 at least; #3 is fixable, but a separate bug should be filed.