I am running Python 3.11.9 (conda version 24.11.0) on macOS Sonoma 14.7.1. It seems that I cannot use the Jupyter Notebook (ipython version 8.29.0; jupyter notebook version 7.0.6) shortcut keys anymore: I cannot insert a new cell above (A) or below (B) or delete it (D) etc. Nothing works. There are suggestions to use JupyteLab, which seems to work, but that’s really not the answer to the question: How can this issue be fixed? Can I downgrade? And if so, what is the recommended version?

Thanks!