Describe the bug
The 'Code' section does not show area to edit snippets.

To Reproduce
Click sidebar icon, and add "+" sign to add a snippet.

Expected behavior
Show "Code" area

Screenshots

Desktop (please complete the following information):

• OS: Mac 10.13 High Sierra
• Browser Chrome
• Version Version 114.0.5735.198 (Official Build) (x86_64)

Additional context
Jupyter Lab 4.2