Posible Bug with PopupMenu and trackpad

This happens with macbook trackpad (osx 10.9), to reproduce: Open the menu (menu.show()) then click with three fingers on trackpad outside the menu.  

Exception: http://pastebin.com/UPdTzK8X

 

It's just the debugger reporting an internal obj-C exception inside Apple code. Not a bug, or anything that needs fixing.