Reference to content profile affects agregation

I like this module but I noticed something weird. As soon as a node reference is entered, Nodes with a date field are counted twice as soon as to and from are entered both.

I have 2 examples. In one of them, date is an argument, in the other one, nodes are filtered on date. It does not matter if the relation is used. Just entering the relation makes nodes being counted double if *from* and *to* are entered.