This is expected behavior. The message is displayed if there are running tasks at the time of shutdown or restart
This article applies to:
Operations are in progress, please wait. The machine will be turned off automatically after the operations are complete.
This is designed behavior. To avoid data corruption, Acronis Scheduler service postpones the system shutdown or restart process until the backup/validation/etc. task is completed.
This is a "safety valve". To avoid data corruption, Windows shutdown is postponed until an Acronis task completes.
(!) Acronis Backup & Recovery starting from Build 17437 (Update 0.5) allows to select machine behavior for such cases:
If you have no tasks running at the time of shutdown or restart, but the machine still displays this message for longer than several minutes, contact Acronis Customer Central with a reference to this article and the following information collected: