Multiple select - Rows titles doesnt match the Node IDS

PROBLEM:

Create a views References with 2 content types grouped by content type, and with the option: "Use rendered output to group rows" in the "references options".

What we get in the node add form?
- A list of node titles that doesnt match the NID used in the value of the select.
So, it seems you are selecting one node but in the database it stores another NID.

Solved uncheking "Use rendered output to group rows".

But it should be solved in code, so, "It needs work" :)