Group Member window not loading on start

[Gedron]

I know there is a fix for this (and that its not really a bug in the Fetish UI per see), but I couldn't find it with a quick search even though I remember reading something about it somewhere in here before.

Somehow I stumbled upon some weird key combination that hid a bunch of game windows for me, I got all of them back and they are fine, but now when I log on, my Group Members window is not showing and I have to use the locater to make it visible every time. I've tried unlocking and relocating it, but that didn't work. Can someone point me in the right direction?