Rendering bug when sliding slowly and navbar is gone

[tobias-r]

Hi, I am experiencing the following bug:

If my navbar is scrolled away and I am slowling sliding to the previous page in stack, the view of the navigationbar behaves weird: http://findpenguins.com/img/AMScrollingNavbar-Bug.png

In this case, there is a tabbar attached to the navbar, but the same phenomenon is also happening without a tabbar, when simply opening a new screen while navbar is gone (just too quickly to take a screenshot).

Just wanted to let you know, also to find out if you guys are experiencing the same problem.

Tobi

[Ch1llb4y]

This bug is even reproducible in the Demo project

[andreamazz]

🤔 This has to be regression, while the interactive gesture was always problematic, it never behaved so badly.
Any help in this would be greatly appreciated.

[andreamazz]

I'm doing some more digging on this. This was introduced with iOS 10. Looks like that when the interactive gesture starts, UIKit brings down the navbar, leading to this glitch. Any idea is welcome