Graphical corruption on Firefox Nightly (Wayland) Intel HD Graphics 630
Also filed on https://bugzilla.mozilla.org/show_bug.cgi?id=1604948
Once every few starts of Firefox on my machine ends up corrupting the display of my Wayland session badly - what looks like a lot of stray marks on my display are seen overlaid on top of all windows, not just Firefox.
This may be a driver bug, but I am not sure how to dig into that, and I only see this issue when starting Firefox -- but not on every start.
Logging out and logging back in resolves the issue, but there is a chance that it recurs on next launch.