One share sees it all, another one does not, with the same settings

[wsw70]

I exposed two shares with root-owned files:

auth:
  - user: root
    password: root
    group: wheel
    uid: 0
    gid: 0
    
global:
  - force user = root
  - force group = wheel
  - browseable = yes
  - read only = no
  - guest ok = yes
  - hide files = /_*/
  - vfs objects = recycle
  - recycle:repository = .recycle
  - recycle:versions = yes
  - validusers = root
  - writelist = root
  - netbios name = SRV
  - netbios aliases = srv.XXX.ts.net
  # - bind interfaces only = yes
  # - interfaces = lo enp3s0 tailscale0

share:
  - name: etc
    path: /etc
    validusers: root
    writelist: root
  - name: root
    path: /root
    validusers: root
    writelist: root

When browsing from Windows 11, I see at the root two shares (etc and root), can enter both, but only the content of etc is fully visible. root is empty.

Both directories are mounted under /etc/samba and from within the container I do see their contents (notably the content of /samba/root)

# compose.yaml

(...)
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - data:/data
      - /data:/samba/data
      - /etc:/samba/etc
      - /root:/samba/root
      - /var/lib/docker/volumes:/samba/docker-volumes