Thanks! The blurriness in comment #4 is expected. Any apps which don't natively support scaling will be scaled by the compositor, which means they will either appear blurry or unevenly pixelated. We choose blurry. So this is not a mutter or gnome-shell bug. It is however a Firefox bug for not supporting scaling.
As for the black frame in comment #5, that is a different issue. That is bug 1751593. ** Changed in: mutter (Ubuntu) Status: Incomplete => Invalid ** Also affects: firefox (Ubuntu) Importance: Undecided Status: New ** Also affects: thunderbird (Ubuntu) Importance: Undecided Status: New ** Summary changed: - mutter framebuffer scaling blurs display + Some apps appear blurry with framebuffer scaling ** Also affects: libreoffice (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1825625 Title: Some apps appear blurry with framebuffer scaling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1825625/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs