When entering the Server Stream system, or ask for authorization for additional areas, with auth2.grantOfflineAccess , the access / update token will not be combined with the previous allowed areas, overriding the previous ones.
Even passing parameters to js calls, for example. auth2.grantOfflineAccess({'include_granted_scopes' : 'true', ...}) , the include_granted_scopes=true parameter is NOT added to the generated URL.
When I manually add the &include_granted_scopes=true parameter to the generated URL in the popup, the incremental combined authorization works as described in the protocol .
Is there a way to do incremental combined authorization with Google SignIn for server-side applications?
Greetings
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