I've verified that this also affects Focal moving from the release pocket MySQL build (8.0.19-0ubuntu5) to the updates pocket (8.0.28-0ubuntu0.20.04.3) but with everything else fully up-to-date against the updates pocket.
I'm not sure what, if anything, we can do about this besides an upstream report, but I'm tagging it regression-update for statistics. ** Tags added: regression-update -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1961617 Title: String returned when DATETIME expected To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mysql-8.0/+bug/1961617/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs