Since the upgrade from v3->v3.1, I discovered this regression in the psycopg2 cursor. jsonb results from sql queries are not loaded into python data structures.
This is an intended change, see #31991.
This causes issues when dumping and loading again, the json fields do not get loaded on the front.
I cannot reproduce any issue with dumpdata/loaddata.
This is also causing issues with a ValuesQuerySet, the output from jsonb fields is always string.
Using QuerySet.values() works for me.
Duplicate of #31991. I'm happy to reopen if you can provide a sample project that reproduce described issues with builtin mechanisms.