The border-radius doesn't scale when the width is smaller than the radius. We need this when the width is updated, with -webkit-transition on the width or with javascript. Checkout the linked file, for sample. By the way Firefox 3 manage this. Thanks.
Created attachment 24520 [details] Example of the problem
Duplicate of bug 21332?
Yes, it's the same bug but for another application.
*** This bug has been marked as a duplicate of 21332 ***