OAuth2 Authorization Code Flow with PKCE - Auth0 returns opaque token instead of JWT even though I requested an audience

I’m trying to use the built in OAuth2 Authorization Code access token getter thing. I’m using Auth0 as the identity provider. I’m using “Authorize using browser” with https://oauth.pstmn.io/v1/callback. I know my auth url, access token url, and client ID are correct. In the advanced options I am requesting the audience of an API I have set up within Auth0.

The problem is Auth0 is returning an opaque token instead of a JWT. Their docs say a JWT should be returned if I specify an audience.

Before I go ask on Auth0’s forums, is there anything in Postman I can try to get this to work?