I play on PC with a gamepad and I've only heard this happening with other gamepad players. When in vMA I'll randomly get a finding group window pop up that covers the whole screen, usually at the most inopportune moment. It will keep popping up until I reloadUI. Obviously this does not happen in group instances, seems to be in vMA the game thinks I should be looking for a group as it is a trial instance. Not sure if this has been reported before but it is very annoying.