to reproduce what I'm talking about, comment out the focus cell line, run a cell with this code in it:
```
%%javascript
$([IPython.events]).on('notebook_loaded.Notebook', function(){
    IPython.tour.tour.goTo(6);
    IPython.tour.start();
});
```

Save the notebook and reload. The tour will start on the step just before the transition to Edit mode. Press right arrow on the keyboard to go to the next cell, mode will change to Edit, press left arrow to go to previous step, mode will change to Command, press right arrow again, mode *should* change to Edit again, but it won't.