Interesting, I do experience some lag of * sometimes but have not observe it would stuck forever, will check out your notebook later.
I didn’t say forever, I said for the duration of the notebook run - i.e. as long as there is at least one cell running, those earlier cells report being busy. And since you’re going after the active cell, it will be the wrong cell - it’ll be the first stuck cell.
Do let me know if you can reproduce it on your side - thank you!
The only culprit with this approach is that the cells much be uncollapsed - if they are collapsed you can’t jump to the current cell.
And when your PRs are approved and the new extensions become available please post a little how-to here Jupyter Notebook Enhancements, Tips And Tricks