After updating Magician to version 7.2.0 and getting another problem, I found out that Magician now prevents Windows Backup from working normally. I started receiving the message:
Error: Windows Backup failed to get an exclusive lock on the EFI system partition (ESP)
To perform the backup I needed to exit Magician completely. It seems that there is some problem with migration service in this version. It creates logs on the disk and locks the system partition. And you can't even disable this service in settings. It just starts working even if you don't need it. And you can't stop it. So it seems that the only workaround here is to uninstall Magician. Or disable autostart and use the app only to check drive status when you need it.