This bug affects both Chrome 17.0.963.56 and Safari 5.1.2 (reproduced on Windows 7). Even though I’m not the first one to come up with this bug, I’m wondering why it hasn’t been fixed after all those years(!). Reproducing this bug is quite simply, which makes me wonder even more..
The newest version of Chrome (17.0.963.46) is a bit of a trouble maker – at least on Windows 7 x64. Seems like the border-radius property causes a bug, which fills the background of the element with its borders color – not entirely, but partly at a height of height x ~0,50-0,52.
Deactivating the border-radius seems to “fix” it, and scrolling has also some effects on it.