Collect send not finalized forms

1. What is the problem? Be very detailed.
ODK Collect send to ODK Aggregate forms without date for Finalized field

In Aggregate, the fields _IS_COMPLETE and _MARK_AS_COMPLETE_DATE are False an null respectively.

How was it possible send this form?

2. What app or server are you using and on what device and operating system? Include version numbers.

Aggregate version: 2.0.3
Collect Version: 1.18