I have a Drupal 8 page which is indexed from Google without any error. The front page is a node configured as a front page in the Basic site settings (admin/config/system/site-information) using the path alias /front or de/heim.
The point is that the path alias for the front page should be the root (e.g. example.com) which is it. So, everything is working fine if I navigate the page.
Why is the path alias shown in Google search results, and not the root domain? It shows example.com/en/front or example.com/de/heim, not example.com.
I have never seen this problem before using Drupal 6 or Drupal 7.