Nostr doesn't work well with tor? It seems like a relay could operate just fine as a hidden service? Afaik websockets should be fine over tor.
Browser based clients on the other hand, probably not so great.
Discussion
Makes sense, seems like a browser problem not a tor problem. I strongly suspect a native app would work fine.
TLS is redundant for hidden services anyway, but accessing clearnet relays seems like it ought to "just work" unless it's a problem with the cert CN when accessed over tor.