Docker's `--ipc=shareable` does not work with Sysbox

If I try to share the same IPC namespace of two containers, the first one started with --ipc=shareable and the second one with --ipc=container:CONTAINERID, I get this error at the start of the second container:

docker: Error response from daemon: failed to create shim task: OCI runtime create failed: container_linux.go:419: starting container process caused: process_linux.go:607: container init caused: rootfs_linux.go:67: setting up rootfs mounts caused: rootfs_linux.go:1122: mounting "mqueue" to rootfs "/var/lib/sysbox/rootfs/cdf52a9bd7a7ce08f5ed3cbf226ed2133a5533535a4053d3c36253ba36df700a/top/merged" at "dev/mqueue" caused: operation not permitted: unknown.

Another IPC issue: If I start with --ipc=host I get:

docker: Error response from daemon: failed to create shim task: OCI runtime create failed: error in the container spec: invalid namespace config: container spec missing namespaces Set{ipc}: unknown.

The second error message sound like there is no IPC option specified.

This happened with the sysbox test version for id mapped mounts 0.5.0-dev, but I assume the IPC issue is unrelated to the mounts.