It sounds like you might have a key stuck down, either physically or logically.
Please run: gsettings list-recursively org.gnome.desktop.a11y.keyboard > kb.txt gsettings list-recursively org.gnome.shell > shell.txt and attach the resulting text files here. ** 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-shell in Ubuntu. https://bugs.launchpad.net/bugs/2098582 Title: Ctrl sometimes closes browser tab, Alt sometimes closes browser window. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2098582/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs