I have a PopUpButton that launches a Menu. In addition I have a
ToggleButtonBar control. If I expand the PopupButton menu and then go to click
a ToggleButtonBar button the menu begins to collapse but will leave some
portion of the menu as a visible artifact. Is this a known bug? I suppose one
solution might be to try and remove the animation for when the menu closes and
have it close immediately. I'm not sure how to do that however and would
prefer a solution where the menu can maintain it's close effect.

Thanks in advance.

This was a coding error on my part, I was setting a new menu object instead of just reinitializing the existing menu.