The caching works, it’s just a config thing that probably got screwy with your upgrade, especially if any networking changed…wifi, IP address, etc. It also could be permissions. See if you can export something to the path you are caching from and if a hidden Catalina permissions thing pops up.
If not, I’d reset the backburner xml by following this…
I’m fairly certain you can ignore after step 8 or so because default Catalina makes that part a chore.