Not Sure If This Is A Bug Or Not!
 

Zonx,
I just noticed something with the bankers. If you right click on a banker, you get the option to Assist as if you were to assist someone during a raid. I was able to repeat it on different characters at different banks. Just wanted to let you aware of it, more than likely it's not the UI and a glitch with the latest patch or expansion in game.

Try to pick the bankers pockets, maybe that works too. ;)

Yes, must be a bug introduced by SOE, context menues on characters are server pushed.

A lot of NPCs have (and have had for a long time) "Assist" in their context menu.

You'd be surprised the weird stuff NPCs target sometimes.