Installed bubbletimer-6.x-1.x-dev.tar.gz to sites/all/modules on Open Atrium beta5. Enabled Bubbletimer Time Management and Bubbletimer group total under admin/build/features.

If I add a case, and specify that I have spent time on the case (bubbletimer_task_list.png), and then go to Bubbletimer group report, the total time remains blank (bubbletimer_group_report.png).