field collection doesn't validate multiple value entries

Scenario:
1) Create an unlimited value field collection with a date (start end) and entity reference (all required fields).
2) Tried to test validation with single item in collection. Element in collection is properly validated with various combinations of partial dates and missing entity reference and validation holds.
3) Saved node, then edited to add another element to collection.
4) Second element I only filled in the entity reference field but left the date empty, submitted the and node saved without any error for missing date.
5) Node appears with incomplete date field but with the entity reference, despite both field being required in the collection.

If a partial date is added to the date field on second element, the date is validated properly, but the actual required aspect of the field is ignored.

I tried this with latest dev as well and found the same problem.