Text frame "jumps" on resignFirstResponder when not using UIReturnKeyDefault

[rholstad]

This can be observed using the provided sample application and making the following changes to TPKAScrollViewController

• Modify the returnKeyType and set the delegate for each UITextField

textField.returnKeyType = UIReturnKeyDone;
textField.delegate = self;

• Implement -(BOOL)textFieldShouldReturn:(UITextField *)textField to dismiss keyboard

-(BOOL)textFieldShouldReturn:(UITextField *)textField {
    [textField resignFirstResponder];
    return true;
}

Type in any field and click the Done button. The _UITextContentView frame jumps to the left briefly before returning to its original position.

This was introduced in build 1.2.4 by adding [self layoutIfNeeded] to -TPKeyboardAvoiding_keyboardWillShow: in commit f533c6c. I see that the issue this was intended to address was "Scrollview stuttering problem on content inset/offset change fixed." Removing this code fixes the text jumping when resigning first responder status, but what are the ramifications?