I have also observed Firefox stopping refreshing windows when I added a new external monitor to a laptop screen running awesome VM. On Focal, the laptop is a Lenovo X1 Yoga 2nd gen.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1931035 Title: Firefox broken on second monitor Status in firefox package in Ubuntu: Confirmed Bug description: 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. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1931035/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
