With the hotfix today, Ban/ White and Priority lists are working, but only when you input the correct capitalization. It's case sensitive and it wasn't before the update. In other words, DayZ1234 does not equal dayz1234, anymore.

Its an issue because most discord bots that I've seen, automatically transpose the gamertag to all lowercase characters. So, everyone on the ban list on my server isn't actually banned, unless their Xbox gamertag happens to be all lowercase.