Default repository Activity default results different than blank search

In FishEye on the Activity tab in the user view of a repository, the default list of commits is different than if you click inside the search box and just hit Enter.

Steps to reproduce:

1. Click on Repositories >> <name of repository.
2. Click on Activity.
3. Note search results.
4. Click inside the Activity search box (beside Expand all).
5. Press Enter.
6. Note differences in results.

Here are example screenshots comparing both sets of results: