Control: forwarded -1 https://jira.mariadb.org/browse/MDEV-36815
I saw this also upstream at https://jira.mariadb.org/browse/MDEV-36815 and in StackExchange at https://dba.stackexchange.com/questions/345906/upgrading-from-mariadb-10-11-8-to-11-4-5-gives-warning-about-error-1267-illegal Presumably a lot of people are running into this. I don't know what is the fix and I don't fully understand why system tables are affected by what charset the client is using.
