Describe the Bug I used Claude 4 Sonnet this morning to create a Jupyter Notebook and everything was working as expected: the LLM could see my notebook, edit it, etc. when coming back from lunch this afternoon nothing works anymore. The agent just tells me that the reading / editing tools are not wo…

Inconsistent Jupyter notebook handling

edervieux August 6, 2025, 8:01am 2

Some more example of Cursor’s disastrous JPNB handling, eating away tokens like crazy:

Pylance not working

Topic		Replies	Views
Impossible to work with Jupyter Notebook Bug Reports	1	439	December 6, 2025
Jupyter Notebook Freezing Cursor Bug Reports	0	154	June 23, 2025
Erased content from Jupyter Notebook cells Bug Reports	1	81	September 29, 2025
Why is o3 blocked with jupyter notebooks? Help	1	36	July 16, 2025
Cursor Analysis not tracking line changes with jupyter notebooks Bug Reports	0	74	July 3, 2025