Buttonset corner classes applied incorrectly in Chrome

[nireve]

Hi. For some reason "ui-corner-left" and "ui-corner-right" classes are swapped in a buttonset in Chrome. For example among halloformat's buttons ("B", "I", "S" and "U"), "B" is supposed to have left round corner and "U" is supposed to have right round corner. Chrome got the other way around. Firefox displays this fine though, which is very strange.

Chrome version: 17.0