iOS 11 large title navigation bar snaps instead of smooth transition

I had a similar looking issue and solved it by removing UINavigationBar.appearance().isTranslucent = false from my AppDelegate.

UPDATE: If you don't want translucency, you should enable extendedLayoutIncludesOpaqueBars. That way all the glitches are fixed.

I faced same issue - I had UIViewController embedded in UINavigationController, the UIViewController had tableview with leading, trailing, top, bottom constraints to safe area. The whole tableview behaved jumpy / snappy. The trick was to change top constraint of tableview to superview.

Here I recorded changing the constraint tableview iOS 11 bug constraint change

Put this line of code on your UIViewController containing UITableView and works fine for me.

Swift

extendedLayoutIncludesOpaqueBars = true;

Objective-C

self.extendedLayoutIncludesOpaqueBars = YES;

Set UITableView AutoLayout top space to "Superview" instead of "Safe Area"