I duplicated a task.
Was the wrong task.
So I hit "undo".
The popup at the top said, "Note updated. Undo Ok."
So apparently it undid some note I had just edited. Unfortunately it had been an hour and I did not know what note it was.

I was surprised that "duplicate task" is not an action that can be undone.

Some things that would help me and others in this situation is:

1. instead of the menu entry being "Undo last action", it could change based on what that action was, like "Undo note update", or "Undo rename task." Many applications have this feature these days. That would allow the user to know ahead of time what they're undoing.

2. Allow and undo of the undo. For example, in regular operation when you update a note (or do almost anything) a popup appears saying "Note updated. Undo?" and the "Undo?" is clickable. If you made a mistake, you can just undo what you just did.

But if you undo something by mistake, the popup for the undo doesn't have an undo link to undo the undo. (How many times can I use "undo" in a single sentence?) Sometimes it's called in other apps, "redo".

Thanks for considering this.