I have the same problems like budy.
One snapshot is scheduled to be activated/renewed every day at 20:00.
If I press the green play button before 20:00, the snapshot is started but never renewed at 20:00. The task status shows the start time of the manual activation.
If i do not press the play button, the snapshot is activated correctly at 20:00 but never renewed and the task shows the start time of the first activation at 20:00.