Public bug reported: After update to firefox 89.0+build2-0ubuntu0.18.04.2, firefox appeared completely broken. Restored history showed a bunch of blank or messed up windows (NOT pages). My system is dual monitor with one monitor in portrait mode.
As part of chasing a fix in a clean profile, got lucky and moved a window to the main, landscape monitor and lo`, it drew correctly. Moving window half on one monitor, half on second showed a working half and messed up half. Starting Firefox in safe-mode on second monitor worked correctly. Only extension in place is uBlock Origin. See screenshot. System is Bionic 18.04 updated 2021-06-05, after which issue noted. Please advise if additional information is needed. ** Affects: firefox (Ubuntu) Importance: Undecided Status: New ** Tags: firefox ** Attachment added: "Screenshot showing issue" https://bugs.launchpad.net/bugs/1931035/+attachment/5502843/+files/Screenshot_2021-06-06_13-32-00.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1931035 Title: Firefox broken on second monitor To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1931035/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs