1. start tasklist (e.g. in develop mode)
2. open tasklist and login into tasklist
3. select the task "do more work" and claim this task (use "No Filters")
-> after the list of tasks has been refreshed the claimed task is not inside the list anymore and the order of the tasks is different than before
The order inside the task list is determenstic.
Same problem when setting due date or follow up date