Vertical blue bar remains from selection sometimes.

It seems like after the selection of the item in the menu has stopped sometimes there is a small remanent left behind: http://drop.spen.co/image/173S0R2U1k3D. Also, I don't personally like that the window remains open until you click the button again, I'd like it to disappear if I click outside the popover window. I'm not sure if this is a feature or a bug though.
