Relationship Report incorrectly includes inactive relationships

Hi,

I'm trying to run a Relationship Report with the following parameters:

Relationship Type [is equal to] Spouse
Relationship Status [is equal to] Active

However, the listing of relationships it gives includes inactive relationships (inactive by virtue of the fact that they have End Dates in the past, ergo they show up under the Inactive Relationships heading when browsing relationships for the associated contact).

This seems to happen no matter the Relationship Type.

I can confirm this functions the same way on the demo site.

Forum thread for this issue: http://forum.civicrm.org/index.php/topic,25269.0.html