On closer inspection, it's not actually doing auth 🤦♂️
Frens fails in the same way as auth. Sounds like nostr:npub1drvpzev3syqt0kjrls50050uzf25gehpz9vgdw08hvex7e0vgfeq0eseet's workaround is what I need to do.
Discussion
I'm glad you've got a breadcrumb to follow. I hope it yields results for you!