Thank you for the report Jamie, and sorry for the lack of a timely response. Are you still seeing the issue with the latest updates applied?
If so, could you please run the following command to attach additional debug information to the bug? Thanks! apport-collect 1875202 ** Changed in: firefox (Ubuntu) Status: Confirmed => Incomplete -- 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/1875202 Title: When Firefox titlebar is turned off windows controls are impacted. Status in Ubuntu MATE: New Status in firefox package in Ubuntu: Incomplete Status in marco package in Ubuntu: Confirmed Bug description: When you go to Firefox --> Customize --> Uncheck Titlebar, the window controls in the upper left are cutoff and impacted by this change. In addition to the windows control any video played in the browser present some tearing due to the change in the pixel height. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1875202/+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