It looks like n8n just rolled out a new feature in the latest update that well auto save, and so they got rid of the whole saving feature. However, I'm seeing a bug where it is not actually saving things like credentials, especially for Supabase. So I can't manually save anything and Claude Code is failing.
Just a heads up...
Update: so I left n8n and went and did something else, came back about 20 minutes later, refreshed my screen, and it saved. Maybe it's not a 2 second save but like a 10 minute save. :)