UI glitch

[donmuerte]

I've been getting this glitch for a while. I can't seem to get rid of it permanently. It shows a window with sliders and settings in the upper left of my screen. If I reloadui it will usually go away, but it comes back randomly when I log back in some days. I can't tell what add-on it is. I suspected it was AwesomeGuildStore or maybe Arkadius Trade Tools. Anyone have any ideas?