How do I get a JWT access token from the hosted login page with React Native?

I’ve just setup Auth0 with the quickstart, but I’m not getting a JWT access token. I’ve read the answer here though it didn’t seem to work. Even when I changed my scope to open id email profile it is still giving me an access token that isn’t in JWT format. I’ve looked at the docs and I can’t seem to find the fix, what would be the solution to this?