Thanks for the bug report. Since most bugs of this nature are caused by extensions, the first thing to do is to check for and uninstall/disable all non-Ubuntu extensions you have enabled. At a minimum:
1. Disable all extensions in the 'Extensions' app; and 2. Look in ~/.local/share/gnome-shell/ and if you find a directory called 'extensions' then delete it. 3. Reboot and tell us if the problem happens again. 4. If the problem does happen again then please run this command to collect more system info: apport-collect 1917066 ** Tags removed: apport-bug ** Package changed: gnome-session (Ubuntu) => gnome-shell (Ubuntu) ** Changed in: gnome-shell (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-session in Ubuntu. https://bugs.launchpad.net/bugs/1917066 Title: windows and popups in gnome become unresponsive To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1917066/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs