Add new option in frontend (list join)

[urbido]

Hello! I found bug which I cannot solve. When I have some record (lets say contract) and there is repeat group of documents (contract can have multiple documents). Everything works fine when I am adding existing documents, but when I add new documents (i.e.: I select contractX, add document (create new and save it in popup form)) it only works for first one, when I add second using same way, the first disapears. When I have 3 documents in contract and add 4th, those 3 also disappear. You knew about it? I know the solution is adding only existing documents, but I would like to create new when adding.
Thanks a lot!

 

[troester]

I can't replicate.
Do you have a standard dbjoin setup:
no multiselect or checkbox
value = id[recommended]