Just for example - google drive integration.
And it is not a solution. The software “offers” you to connect your google account, you have the option in gnome’s menu, so it should work (or should not be there).
The problem actually is far more reaching, as it prevents adding gmail account in evolution, gnome calendars or Geary as well.
I’ve made such course and still feel sorry for the students. Was some legacy code just laying around.