Getting empty email on Google Sign In

I have setup the firebase google sign in and create account. Everything is happening as expected except that in Firebase Auth, I am getting "-" in the Identifier which should be the email id. In my users collection, I am getting all other fields like display_name, photoUrl etc.

Here is the Firebase Auth screen:

Here is the user document being created on sign in/create account:

Here is my Google sign in action:

Here is my Google Create account action:

Please help me find the issue.