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Summary:
On iOS 7, subclasses of UITextField receive the -deleteBackward message when the backspace key is pressed, even when the text field is empty. On iOS 8, subclasses of UITextField never receive -deleteBackward. This makes it impossible to detect backspace on an empty text field, which is necessary for implementing e.g. token field controls.

Steps to Reproduce:
Subclass UITextField and override deleteBackward with:
- (void)deleteBackward
{
    NSLog(@"deleteBackward");
    [super deleteBackward];
}


Expected Results:
Should see "deleteBackward" every time backspace is pressed.

Actual Results:
This works fine on iOS 7. On iOS 8, the method is never called.

Version:
iOS 8.0 (12A4345d)

Notes:
Attached sample project.

Configuration:
any

Attachments:
'TestDeleteBackward.zip' was successfully uploaded.