Thanks PhoneBoy, I didn't know about this new 83.20 And I just downloaded and installed it.
However, I do confirm in my particular case that this is not working. The client is not able to "Enforce Firewall Policy"
I need to add that the same setup on Catalina works without issue (82.50 or 83.20 now both tested)
Regarding my previous comment, I know it is not supported and aren't complaining about that, I know it will come in due time. Am just saying that I can report at least one bug while alangrig was stating that "No issues have been stated so far."
If I can help with detecting issues with my specific work environment, I will be happy 🙂