I have been messing with this issue for a couple of weeks now and get so annoyed with it, I usually give up.
Somehow I have a selection from the drop down tab all the way to the bottom left of the chat screen and I cannot remove it. It looks to be a custom chat selection similar to how you can choose from Team, Local, Fleet, etc.
I am thinking way back when I first started a friend of mine tried to invite me to a channel and I probably accepted. I have messed with the chat selections screen endlessly and cannot figure out how to remove it.
Any help would be greatly appreciated.
Of course as soon as I posted this, I would figure it out. All I had to do was rejoin and leave again. For some reason, it didn't do that for me last time. Mods, guess you can close this or keep it around for informational purposes.