Spinner problem

Spinner problem

I've this rendering problem for spinner. See this picture:



Please note: I cannot update jquery; i cannot update jqueryui.

But i need to debug this issed and understand what's the problem

The Widget is bad-rendered but
- is fully working
- no javascript errors
- Ie9, FF 20, latest Chrome and Safari all looks like this.

Please, help me debug this problem, I've no idea where to start, because of no js errors !