Revoke & Redo does not work

The revoke and undo command simply does not work even after I have asked AI for help and tried many solutions, nothing works :\

could you elaborate more? what did you do to invoke the “revoke and undo command”?

also, after shutting down the editor / reloading the editor, there is no undo.

I wonder if they are referring to Ai Copilot for Data Models.

Ctrl Z & Ctrl shift Z commands.

No, I did not close or reload the editor, I was actively working.