Not sure this helps, but I had this problem with multiple users and some not on Ubuntu 24.04 Desktop, figured out that using:
gsettings set org.gnome.desktop.interface gtk-im-module gtk-im-context- simple fixed the problem, after that and rebooting, keyboard input worked again in Firefox, Thunderbird and Chromium. (needed to call this per account) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1950703 Title: Keyboard input does't work in several apps with iBus running To manage notifications about this bug go to: https://bugs.launchpad.net/snapd/+bug/1950703/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs