Complex fields duplicated when not specifying title

Steps to reproduce:

1. Create a document by hitting the "new" button on the container. (our document has a schema that has one multi-valued, complex field. the complex field has 5 muli-valued string fields).
2. Do not enter the title (a required field)
3. Enter two instances of the complex field (hit "Add" button twice".
4. In the first instance of the complex field, enter the string "aa" in the first field.
5. In the second instance of the complex field, enter the string "bb" in the second field.
6. Hit "Create" button
7. Should get error that says for the title field "Value is required."
8. Enter a title
9. Hit "Create" button again

Expected result: the created document has 2 instances of complex field. First instance has first field value of "aa". Second instance has second instance field value of "bb".

Actual result: the created document has 2 instances of complex field. First instance has first field value of "aa" and second field values of ["bb, "bb"]. Second instance has second field value of "bb".