swift2 - Top navigation bar get corrupted and application crashed on continues tapping on menu items- iOS, Swift -

i have slide out menu in application , when tap on menu items, navigation bar corrupted. button in 1 of screen getting overlapped hamburger menu button. when tapping overlapped combination application crashed. tried making animation 'false' in self.navigationcontroller?.pushviewcontroller(myviewcontroller, animated: false), issue still exist.

note: crash comes when running in device not in simulator. fine in simulator.

i added screen shot of problem below.