Because of the changes now on this forum, I can't report a BUG on the bugs forums. Because this is the only forum I can post on now, I'll have to do it here.
Here is the BUG with WBB Core 3.1 (also suspect this bug will be present in latest version as well)
When you add a Label to some articles, and that label is used enough to list articles spanning 2 pages. When you click the 2nd page number it does not display the 2nd page will only articles using that Label.