I have a google oauth2 app in production publishing status that has scopes to access google workspace, works fine before and after google oauth2 app verification process.

Recently I've requested 4 new scopes to access google slides and google sheets for my google oauth2 app, although the verification process is still pending, I could select the new 4 scopes on the OAuth consent screen then successfully got access/refresh token. Problem: Every time i use the working access token to access google slides/sheets that requires the new scopes, I got status code 403. the same access token works when accessing other apps that has scopes granted. This used to work by accepting the prompted screen saying "This app has not been verified by google" when granting unverified scopes.

Notice that everything works in my dev environment that uses a different oauth2 app in testing publishing status.