https://bugs.freedesktop.org/show_bug.cgi?id=99275
--- Comment #5 from Reimar Imhof tuxuser@quantentunnel.de --- I've attached the logs and the info about changed components. They are all from download.opensuse.org/repositories/X11:/XOrg/openSUSE_Leap_42.2/
The flicker problem is not about the menu but the drop down list that opens when you enter an address to the firefox address field.
A second effect: When I re-size a window using kernel 4.8.14 the background (or underlying windows) shine through. When I do so using kernel 4.9 it also starts flickering and shows artifacts from the background.