I have the same problem. In Ubuntu 20.20 daily build(2020/02/14). Before `apt dist-upgrade` today, I was able to type without any problems.
~/$ LANG=C apt-cache policy chromium-browser chromium-browser: Installed: 80.0.3987.87-0ubuntu1 Candidate: 80.0.3987.87-0ubuntu1 Version table: *** 80.0.3987.87-0ubuntu1 500 500 http://jp.archive.ubuntu.com/ubuntu focal/universe amd64 Packages 100 /var/lib/dpkg/status ~/$ env | grep IM_ GTK_IM_MODULE=ibus QT4_IM_MODULE=ibus IM_CONFIG_PHASE=1 CLUTTER_IM_MODULE=ibus QT_IM_MODULE=ibus ~/$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu Focal Fossa (development branch) Release: 20.04 Codename: focal ~/$ uname -a Linux ubuntu-ma 5.4.0-14-generic #17-Ubuntu SMP Thu Feb 6 22:47:59 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1307648 Title: chromium-browser does not accept keyboard input with iBus To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/chromium-browser/+bug/1307648/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs