extensions does not work or only work once

[zhang-xinyuan]

Hello,

I installed jupyter_contrib_nb_extensions with the following versions:

· notebook version: 6.5.4
· python: 3.11.3
· jupyter_contrib_nbextensions: 0.7.0

using these commands for the installtion of jupyter_contrib_nbextensions:

pip install jupyter_nbextensions_configurator jupyter_contrib_nbextensions
jupyter contrib nbextension install --user
jupyter nbextensions_configurator enable --user

extensions appear in jupyter notebook, but they doesn't work properly.
For example, 1、 I must double-click on the blank space of the directory to display the content.

2、For the Variable Inspector, it only displays the first variable and does not display any other variables that run after it

it only shows int a， not b、c