There have been a few topics on the database that SkyAware uses including this one: https://discussions.flightaware.com/t/aircraft-type-shows-n-a/52836
I don’t know whether there were any changes made to the database in 3.8.2.
Basically there is a file containing a list of known aircraft types that is used to determine the icon that needs to be displayed but if there is no entry it seems to default to a generic type based on the size of aircraft.
It is possible to edit the list yourself although that assumes a certain level of technical ability.
There are a couple of posts on the subject including this one: https://discussions.flightaware.com/t/skyview-aircraft-symbols/48236