The bug-report form lost the version info.
I'm experiencing the problem with ebean 2.7.3.

The solution, of course, is to manually specify the join table properties:
class Person {
@Id
public Long id;
@ManyToMany
@JoinTable(
name = "friends",
joinColumns = @JoinColumn(name = "friend_id", referencedColumnName = "id"),
inverseJoinColumns = @JoinColumn(name = "person_id", referencedColumnName = "id")
)
public List friends;
}

I don't think we should change Ebean's behavior. In this case I believe you should explicitly specify the foreign key columns.

Leaving Ebean unchanged unless someone argues for some other approach.