Azure B2C OIDC - callback url

Greetings,

I've been attempting to wire up Azure Container App Service (ACA) with my Azure B2C tenant and have run across an issue. ACA provides out of the box auth mechanisms for multiple identity providers including OIDC, AAD, Google, Apple etc. However, the callback url convention they've adopted requires a certain format, namely like so: https://.....xyz/.auth/login/aad/callback. What I've discovered through painful trial and error is that BC2 doesn't like the '.' in the callback url and when the case arises it falls back to a default callback url and simply ignores the user provided url. So, then, the '/.auth ges overwritten with 'azure-ad-b2c'. I know this isn't necessarily an ACA issue but can the callback convention be overwritten because the MS folks in the B2C group don't seem all that active so I'm looking for work arounds.

Thx!

Start by reviewing Azure Container Apps' documented OIDC callback configuration and the Azure B2C callback URL behavior described in the issue. Determine whether the callback convention can be overridden or whether a supported workaround exists; document the confirmed configuration or limitation as the outcome.