AuthMode gets confused w/ multiple logged in users

Question

I\'m bumping into a weird problem in Google Apps Script, working on a Slides add-on.

When I run the add-on in an incognito window with just one user logged in (call

Answer 1

Having multiple log-ins active in the same browser is known to cause issues with Google Authorization.

The default account (typically the account that was first logged into) takes precedence over any other accounts. Google has yet to fully resolve this. Current work-around is to recommend to your users to log out of all other accounts.