Can't start container with Filesystem Devices attached in 26.0.0-BETA1

Hi, i tried to create a container (debian:bookworm:amd64:default) and want to integrate a filesystem device. The folder pre-exists before Beta1.

When I try to start I get:
internal error: guest failed to start: Failure in libvirt_lxc startup: Failed to access '/mnt/apps-pool/Apps/jedha': No such file or directory