Undo-Button Mistake

[McShark]

If you alter an image and think: "This was stupid", you're Using the Undo-Button.

Here's the mistake:
If you do 1 Effect and press Undo one time the Undo-Function is still enabled (After all possible Undos it should be disabled).

[Dreamer]

If you alter an image and think: "This was stupid", you're Using the Undo-Button.

Here's the mistake:
If you do 1 Effect and press Undo one time the Undo-Function is still enabled (After all possible Undos it should be disabled).

There's just 1 undo, button is for undo/redo.