XF 1.5 [Solved]xenforo styles wont change in firefox.

I just updated to xenforo 1.5.2
after that i updated black reponsive themes also to match new version of xenforo.
But looks like xenforo 1.5.2 have a bug when using firefox.

Styles cant update when when selecting styles in bottom of forum.
I think its a xenforo problem, and not the actuall style that does it.

fire fox it wont update , but Chrome works.

I tried deleting cookies deleting cache in firefox , noting helps.