Self-hosted: SSO is failing to setup due to 400 from admin

(#603) Bug Fixed self-hosting

Thread

Comment by @NachoPicchu
RexSystem 1 vote originally by @NachoPicchu on GitHub
I work with split-horizon DNS. My IdP is reachable externally, but from Fluxers POV the address will resolve as a local one. So I'm hoping this is indeed considered a bug.