I can reliably observe the problem, on disco and eoan. Tested both the Ubuntu packages from the archive, and the upstream build.
Would you mind filing an upstream bug report at https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CFirefox and sharing the link to it here? Thanks! ** Summary changed: - Firefox on Wayland opens with black screen + Firefox window initially appears black when launching on Wayland ** Changed in: firefox (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1838963 Title: Firefox window initially appears black when launching on Wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1838963/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
