http://play.ionic.io/app/1dffbfcfb14b
It is cut from real app. App have main menu as state, and all other states have side menu.
Click to buttons in sequens: “Go about” -> “Go back” -> “Go about” -> "Go back"
Last “Go back” does nothing.
If we remove “cache: false” from all states or remove sidemenu - it will work normally.