I had a bit of a play out of curiosity.
I don't really understand it but I may have a fix.
In the "Set up list schemes" make sure that the "Measured Area" zone parameter is ticked.
If it is off you won't see the measured area for sure.
Press OK.
You may not still see the measured area.
If not, open the settings again and change the "Library Parts Additional Parameters" to something else.
It doesn't seem to matter what you change it to.
Press OK.
You should now see the measured are.
I least this works consistently for me when I try it.
As I say I have no idea why.
Could just be a bug in the programming that is probably unlikely to get fixed.
Or just the fact I have no idea what is going on and I am missing something.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11