We have several feature services that have related records. The workflow is for the user to first create the parent record - a point in this case - before moving forward with the related records. With the new update to Collector users now see all feature services when they click on the plus sign and they can move directly to the related polygon record before creating the point. Therefore they are creating records that are missing the data that is included in the point record. Android is not affected by this bug. Screen shot attached.
We have built a loader for these services and the loader only picks up completed records.