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..
img {
border: 1px solid green;
border-radius: 5px;
}