It sounds like you are describing Tiling Assistant. Please try disabling it:
gnome-extensions disable [email protected] ** Package changed: mutter (Ubuntu) => gnome-shell-extension-tiling- assistant (Ubuntu) ** Changed in: gnome-shell-extension-tiling-assistant (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2143765 Title: Visual artifact in top-left corner when entering window overview on Wayland To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell-extension-tiling-assistant/+bug/2143765/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
