Some keyboard shortcuts occasionally become inactive in a given notebook

[kirilllzaitsev]

Applies To

• Notebooks (.ipynb files)
• Interactive Window and/or Cell Scripts (.py files with #%% markers)

What happened?

• Ctrl+A shortcut to select everything in a cell occasionally gets inactive in a given notebook: pressing it results in no action.
• Opening other notebooks and trying it there works.
• Other common shortcuts still work.
• Upon reload of the notebook, the shortcut works again.
• The issue occurs after a period of trouble-free execution.

VS Code Version

1.107.0

Jupyter Extension Version

2025.10.2025121801

Jupyter logs

21:17:58.783 [info] Starting Kernel (Python Path: ~/.conda/envs/e3d/bin/python, Conda, 3.10.19) for '/media/<username>/notebooks/exp_wandb.ipynb' (disableUI=true)
21:18:00.569 [info] Process Execution: ~/.conda/envs/e3d/bin/python -m pip list
21:18:00.587 [info] Process Execution: ~/.conda/envs/e3d/bin/python -c "import ipykernel; print(ipykernel.__version__); print("5dc3a68c-e34e-4080-9c3e-2a532b2ccb4d"); print(ipykernel.__file__)"
21:18:00.594 [info] Process Execution: ~/.conda/envs/e3d/bin/python -m ipykernel_launcher --f=/run/user/1000/jupyter/runtime/kernel-v35dd5648ac0e68a94caec7e9e72e0785a104238a1.json
    > cwd: /media/<username>/notebooks
21:18:01.525 [info] Kernel successfully started
21:18:02.339 [error] Widget Error: Failed to access CDN https://unpkg.com/ after 0 attempt(s), TypeError: Failed to fetch

Coding Language and Runtime Version

Python 3.10.19

Language Extension Version (if applicable)

No response

Anaconda Version (if applicable)

No response

Running Jupyter locally or remotely?

None