User management page fails on searching with role and include disabled users

The user management page fails on searching with role and include disabled users. The problem only appears when search options doesn't include a user name text, but include "include disabled" checkbox and a "role" selected with the dropdown menu.

With this page: /openmrs/admin/users/users.list?name=&role=System+Developer&includeDisabled=on&action=Search.

This was found with OpenMRS Version: 1.8.0 beta2 Build 18207
Started Modules: logic v0.5, drugneeds v1.4, formentry v5.0.1