you could have an On Exit script trigger on the field to do a refresh.
Thanks for the replies!
There was no script set up for the tutorial, so I shouldn't need one here.
Yes, the portal is set up to sort, so I am expecting it to sort immediately as the tutorial did. It simply does not.
Do remember that this is on a Windows 10 Surface Book, so if it's not a Windows problem, it could well be a Surface Book problem. ;-)
I'll reboot and also try it on a different computer to see if that makes any difference.