High Aerobic Shortage - still no solution

So I see many threads about High Aerobic Shortage, but apart from well meaning folks saying just train in Zone 4 or 5, there is no clear reply from Garmin that I can see.

I have been using both a Edge1030+ and a Fenix 6 and neither will give me any High Aerobic points. My training intensity varies and I spend sufficient time in Zone 4/5. Further I fail to see how you can have Low Aerobic and Anaerobic but somehow mysteriously jump between them. In other words this appears to be an algorithm failure.

Do Garmin read these forums? Has there been any response to the many threads raising the same?

Please feel free to reply that you have issues with this too or that you have a solution. (Training advice is not what I am seeking here.)