This is one of those "client features" that you always appear invisible to yourself when button is pressed, even if you not in fact not invisible. You can even see in Tips in the game if you open help section. It was Verant idea of - find out on your own if you are invised or not. Possibly, Emu coders COULD prabobly code in an option to send in client update to un-hide you when you loot (this is something that is beyond my coding skill), but they would prabobly replied- this is not Live-like
