I have an iOS app with UITabBarController on a master screen, navigating to a detail screen hiding the UITabBarController with setting hidesB
UITabBarController
hidesB
In my case (iOS 12.1.4), I found that this weird glitchy behaviour was triggered by modals being presented with the .modalPresentationStyle = .fullScreen
.modalPresentationStyle = .fullScreen
After updating their presentationStyle to .overFullScreen, the glitch went away.
.overFullScreen