Deleting an existing connector throws exception

When deleting a populated connector in the latest IDB5 build the following error is received:

An exception of type 'System.Data.SqlClient.SqlException' occurred in Unify.IdentityBroker.Connector.Engine.dll but was not handled in user code

Additional information: Constraint 'FK_ChangeLog_Partition' does not belong to table 'Changes'.

The connector is still deleted successfully.