Yes it seems related to HiDPI, in fact this issue appears either with a second monitor or not. I'm using a laptop with an HiDPI display.
I have the same issue with Google Chrome. I'm now able to run apport-collect, but it seems to be taking a long time. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to chromium-browser in Ubuntu. https://bugs.launchpad.net/bugs/1874727 Title: [snap] fullscreen uses only 1/4 of screen on secondary monitor with HiDPI scaling Status in chromium-browser package in Ubuntu: Confirmed Bug description: lsb_release -rd -> Description: Ubuntu 20.04 LTS Release: 20.04 apt-cache policy chromium -> chromium: Installiert: (keine) Installationskandidat: (keine) Versionstabelle: hardware: 2x monitors: 4K scaling: 200% Is: In chromium the fullscreen-mode uses only 1/4 of the screen on the 2nd monitor. Should be: In chromium the fullscreen-mode uses 1/1 of the screen on the 2nd monitor. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1874727/+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