Comment # 10 on bug 91930 from pavol@klacansky.com

(In reply to Hugues Ross from comment #9)
> (In reply to Ian Brunelli from comment #7)
> > The update to mesa 11.0.3 fixed this issue for me.
> > 
> > Anyone else can confirm that this is fixed?
> 
> The update seems to have fixed the issue for me as well.

Can you test with LIBGL_ALWAYS_SOFTWARE=on ? Because I am getting black widget
before I hover over them.