To my knowledge, we never did support non-lower case groups.
I just thought I'd been supporting a XGUI bug all this time that allowed mixed case entry.
I'm of the opinion that our code should still force lower case groups when storing them.
I only imagine the future support horrors where hosts trying to add themselves to the same group, but using
SuperAdmin
Superadmin
SUPERADMIN
and then coming here and asking why they get "group doesn't exist".
Imagine that, but for every other time random admin with adduser access tries to add someone on a server.
Food for thought.
Barely edible perhaps, but food.