title: Python VSC - Empty Cell
body: <p>This might be a basic question, but I'm on an M1 Mac, using Visual Studio Code.
  Many times before I have pressed cmd-z to undo and it opens an empty cell. I cannot work out how to get back to my code and at prior times if it wasn't saved I've started again. I've turned this feature off in the settings but yet it persists. Can you please help me get back to my normal code and close this cell?</p>
  <p>See image below.</p>
  <p>Empty cell:<br />
  <a href="https://i.stack.imgur.com/h6iyT.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/h6iyT.png" alt="enter image description here" /></a></p>