I was getting this error as well. However, i typically use Gnome fallback, and decided to try using regular Ubuntu desktop. When I do, I no longer get the error - password fields behave as expected.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1836659 Title: Ubuntu 18.04's ibus package breaks password fields in Firefox again To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1836659/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs