So the fetch clauses are expected to be in order:

So if they are out of order like:

find order
fetch customer.contacts.notes
fetch customer.contacts
fetch customer

rather than:

find order
fetch customer
fetch customer.contacts
fetch customer.contacts.notes

Then Ebean can assign a "query join" incorrectly (to customer.contacts.notes rather than customer.contacts in this case).

Ebean should handle this by ordering the fetch paths if required.