Using an Entityreference field in a content type A makes it possible to reference multiple items from another content type B to it. On node teaser pages or any other Views lists you can list them additionally on each row of content item from the content type A as a sub-list of referenced items. But how can I list the reference sources the other way around automatically without using another Entityreference field on the content type B (needless double-edit)?
Example: A car (content type A) has been repaired in 3 different car service stations (content type B). So the content type "car" gets a Entityreference field to add them (items from B). When I build a list of service stations (B), I would like to see a list of the cars (A) being repared in them automatically without an additional back reference field or additional modules like CER, making things needlessly complicated in the database.
NOTE: Basically it's the behaviour we would expect from Taxonomy terms, which are also Entityreferences in Drupal 8, but they seem to have some more build in functionality to work from both sides in item lists.