Handling firebase google auth redirect

When using firebase google oauth (sign in with redirect), netlify does not redirect to the google sign in page. Instead, it stays on the same SPA.

I have /* /index.html 200 in my _redirects file. Google sign in redirects the user to /__/auth/handler. Where should I redirect this to?

I gave you this advice in the helpdesk a couple days ago but haven’t heard back so not sure if it helped:

Seems like you’d need to proxy /__/auth/handler specifically BEFORE the /* redirect (cf https://docs.netlify.com/routing/redirects/rewrites-proxies/#proxy-to-another-service).

I don’t know where it is supposed to be proxy’d to, but if there is no file present there, then we will serve your index.html per the SPA rule you’ve implemented and quoted in your message.