Can't confirm your shutdown issue on my system.
-Fossapup64 9.5 host, Virtualbox 6.1
-boot from F96-CE_2.iso
-savefile created on .vdi virtual hard drive
-shutdown & restart execute with no errors
Thanks
wizard
Note:
Headings for these posts are not going to match subject of topic.
They were split from another topic to make this topic.