https://bugs.freedesktop.org/show_bug.cgi?id=91930
--- Comment #10 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.