Keypress 18

I got a keypress 18 error that it said to report....

I'm not sure what I did, but I think I tried to invite to a member already in a group.

[Glitchless]

So it happened and you weren't even using your keyboard?

I was juggling around my chars and I can't remember what I exactly did as when I came back to one of them, it had that message at the top. I don't need the keyboard when grouping.... but I may have pressed escape to get rid of the command prompt.