Rename a file or directory shortcut in jupyter lab?
You don't need to select the file and rename it.
You can give desired name just after a notebook it created or while it's open.Right Click on the tab where Untitled(in my case it is Untitled1) is written, in top left corner and select Rename Notebook.
It will open a popup text box.
change the name and click on RENAME.
I am also having the same problem. I found the settings in using my jupyter-themer from the Menu: Help-> Edit Keyboard Shortcuts -> rename notebook.see image description