uinavigationcontroller - UINavigationController standard back button strange behavior (hiding without fading)

Question

I do regular pushViewController, then tap back button (all controlls native). The first time I do it all is fine, but further times animation popping to previous controller is strange - back button dissapeares without fade animation. What can be wrong?

MWPhotoBrowser *browser = [[MWPhotoBrowser alloc] initWithDelegate:self];

browser.displayActionButton = YES;

[self.navigationController pushViewController:browser animated:YES];

Answer 1

这是 MWPhotoBrowser 的问题。它创建新的后退按钮，与标准相同，但其行为不同。