So past few times I have used OQ every time i get a invite for a group I am waiting for it says the person is already my friend and removes me from the group. I tried reloading and reinstalling and still the same issues. It adds the person then removes them. This has happened with about 7 different groups already.

if you have any addons that either auto accept or auto reject group invites, you need to turn those off.

elvui has an auto-accept on the general tab