Yes, same thing happened to me, and I had not updated cursor. On all my machines, as of May 22, 2025, cursor no longer autocompletes in Jupyter notebooks. Autocompletion works fine in .py files. I have restarted cursor, computer, signed out and in. Autocompletion in notebooks still doesn’t work.
Right, I just updated to version 0.50.6 and autocompletion now works in notebooks.
You could say that it works a bit too well. I typed the comment, hit enter, it suggested the start of the for loop. I tabbed through the first print statement, and now it suggests a few more!