Closes #3368

lib/ios/RNNRootViewController.m

 			_customTopBarBackground = [[RNNCustomTitleView alloc] initWithFrame:self.navigationController.navigationBar.bounds subView:reactView alignment:@"fill"];
 			[self.navigationController.navigationBar insertSubview:_customTopBarBackground atIndex:1];
 			self.navigationController.navigationBar.clipsToBounds = YES;
-		} else if ([[self.navigationController.navigationBar.subviews objectAtIndex:1] isKindOfClass:[RNNCustomTitleView class]]) {
+		} else if (self.navigationController.navigationBar.subviews.count && [[self.navigationController.navigationBar.subviews objectAtIndex:1] isKindOfClass:[RNNCustomTitleView class]]) {
 			[[self.navigationController.navigationBar.subviews objectAtIndex:1] removeFromSuperview];
 			self.navigationController.navigationBar.clipsToBounds = NO;
 		}
 	} if (_customTopBarBackground && _customTopBarBackground.superview == nil) {
-		if ([[self.navigationController.navigationBar.subviews objectAtIndex:1] isKindOfClass:[RNNCustomTitleView class]]) {
+		if (self.navigationController.navigationBar.subviews.count && [[self.navigationController.navigationBar.subviews objectAtIndex:1] isKindOfClass:[RNNCustomTitleView class]]) {
 			[[self.navigationController.navigationBar.subviews objectAtIndex:1] removeFromSuperview];
 		}
 		[self.navigationController.navigationBar insertSubview:_customTopBarBackground atIndex:1];