I can still reproduce it during the update from 19.10 to 20.04. I made a simple fix for a case when the locale uses non latin alphabet.
** Patch added: "patch.diff" https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1369231/+attachment/5364855/+files/patch.diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1369231 Title: do-release-upgrade in localized environment does not accept english input To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1369231/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
