The Change Data Capture functionfn_cdc_get_net_changes_capture_instance incorrectly returns delete and update operation rows for an update operation in SQL Server 2014 or 2016.
Note The expected behavior is that it should only return update operation rows for the update operation.
This problem is fixed in the following cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology Microsoft uses to describe software updates.