I tested the proposed workaround. It did not work for me:
on the host:
> ls -la /home/USER_HOST/VM_Data/Open*.*
-rw-r--r-- 1 USER_HOST users 40749 Mar 3 2023 /home/USER_HOST/VM_Data/Opensuse_beer_label.jpg
>
the same file in the guest:
> ls -la /home/USER_GUEST/VM_share/Open*.*
-rwxrwx--- 1 root vboxsf 40749 Apr 3 09:43 /home/USER_GUEST/VM_share/Opensuse_beer_label.jpg
>