Screen flashes when OSD appears while playing video
The entire screen flashes while playing a video in mpv, gnome-mpv or VLC, full screen, if the OSD is triggered (volume change). All the windows under the full screen video appear for a split second then disappear.
I've experienced this issue in GNOME 3.34.1 (Ubuntu 19.10), 3.34.2 (Arch Linux) and 3.35.1 (Fedora rawhide). It occurs in X but not Wayland. I've also used various themes (shell themes and GTK themes) and it still occurs. I've also experienced this on various machines using various graphics drivers (with and without AMD's TearFree option on).
I'm stumped.
P.S. https://www.reddit.com/r/gnome/comments/egdlgt/screen_flashes_while_watching_video_after_osd/fc6rs8y/ A number of users have reported experiencing the same issue.
Edited by Ghost User