F31 in Virtual box no shared folders available

[Peter Boy]

I’m running Fedora in  VirtualBox on a Mac. With F31, shared folder don’t work for me. I use the guest additions Fedora is providing. They are obviously installed automatically now when VirtualBox is detected during installation.

The configuration works flawlessly with F30 and CentOS 8 & 7. Do I have to modify something for Fedora 31? Had anybody similar issues (and a solution)?

Thanks