title: How to undo/redo changes inside the selected cell in Jupyter notebook?
body: <p>I am using Jupyter Notebook (from Anaconda JupyterLab) on Windows 10 and tried to undo/redo changes in the selected cell. However, I can only undo/redo changes in the whole notebook.</p>
  <p>For example, I edited cell#1 then cell#2. Say I want to undo changes in cell#1, so I go to cell#1 and press Control+Z, it will however undo the change in cell#2.</p>
  <p>My friend using Mac doesn't have this issue. Are there any settings for this? I searched online and didn't find anyone who has the same problem. It is so weird!</p>