iphone push view by storyboard segue the Navigation Bar flickers black when animating

i development use xcode 9.2 and swift 4.0.3

 

and then create a segue (show:push) in storyboard


https://i.stack.imgur.com/t1Mk4.png

 

 

 

Everything was fine at first, but after a while the push animation was not working properly.

 

https://i.stack.imgur.com/38M7y.gif

 

 

 

 

I don’t know how this happened, how to solve it? thx!

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