Tnx for your reply!
But I already checked it in all standard browser (Chrome, FireFox, Safari, Opera, IE9+).
It looks good in Chrome version 26.0.1410.64 m.
Based on your answer I guess you are using webkit as embedded browser. Which version of webkit is included?
It looks like a known bug in webkit, but it is already fixed in new versions.
For reference on the bug:
chrome bugreportand
webkit bug report