apps-script-oauth2: Too many redirects when attempting authorisation from the Gmail app

I’m working on a gmail add-on with the following code:

    function getGoogleService() {
      return OAuth2.createService('google')
        .setAuthorizationBaseUrl('https://accounts.google.com/o/oauth2/auth')
        .setTokenUrl('https://accounts.google.com/o/oauth2/token')
        .setClientId('...')
        .setClientSecret('...')
        .setCallbackFunction('authCallback')
        .setPropertyStore(PropertiesService.getUserProperties())
        .setScope('profile email')
        .setParam('login_hint', Session.getActiveUser().getEmail())
    }

    function authCallback(callbackRequest) {
      var authorized = getGoogleService().handleCallback(callbackRequest);
  
      if (authorized) {
        return HtmlService.createHtmlOutput(
          'Success! <script>setTimeout(function() { top.window.close() }, 1);</script>'
        );
      } else {
        return HtmlService.createHtmlOutput('Denied');
      }
    }

I’ve taken it from README.md and it works when the authorisation is done from gmail’s desktop web. But when attempting the same from the android Gmail app, the browser shows a TOO_MANY_REDIRECTS error on the https://script.google.com/macros/d/{SCRIPT ID}/usercallback URL, as can be seen on the screenshot.

If I log in first through the web, the add-on works fine on the app. I’ve tried trello and asana add-ons and the same happens with them, so the issue might not be related to this library.