UPDATE: For me the problem occurs only if "Pointer Location" on the "Keyboard & Mouse" page of the gnome-tweaks utility is set. I have turned it off now and the left Ctrl key now works with all keyboard layouts again.
If you happen to not find the mouse pointer sometimes, simply make it bigger, with "Cursor Size" under "Universal Access" in the GNOME Control Center. Daniel, thanks for your investigations and the link to the issue report on GNOME's GitLab, where I have found the hint with the "Pointer Location". -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1872230 Title: With any US international layout left Ctrl key does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1872230/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs