Nautilus trash doesn't show files in 'bind folders'

I have several home folders mounted in another drive:

$ cat /etc/fstab
....
UUID=25df1ca5-f8d6-44a7-a20a-ff6f47fb2b0f /media/ ext4 defaults 0 2

/media/simon/documentos /home/simon/Documentos none bind 0 0
/media/simon/descargas /home/simon/Descargas none bind 0 0
/media/simon/imagenes /home/simon/Imágenes none bind 0 0
/media/simon/musica /home/simon/Música none bind 0 0
/media/simon/plantillas /home/simon/Plantillas none bind 0 0
/media/simon/videos /home/simon/Vídeos none bind 0 0
/media/simon/fuentes /home/simon/Fuentes none bind 0 0
....

$ la /media/simon/descargas/
...
drwx------ 4 simon simon 4,0K ago 26 11:31 .Trash-1000/

$ la /media/simon/fuentes/
....
drwx------ 4 simon simon 4,0K oct 13 16:09 .Trash-1000/

There is a '.Trash-1000' folder created in every /media/simon/xxxx folder with trashed files from Nautilus. Up here all right.

The problem is that Nautilus folder doesn't show files in those '.Trash-1000' folders.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nautilus 1:3.10.1-0ubuntu9.3
Uname: Linux 3.17.0-031700-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: Unity
Date: Mon Oct 13 16:23:22 2014
GsettingsChanges: b'org.gnome.nautilus.list-view' b'default-column-order' b"['name', 'size', 'type', 'date_modified', 'date_accessed', 'owner', 'group', 'permissions', 'mime_type', 'where']"
InstallationDate: Installed on 2014-07-18 (87 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)
modified.conffile..etc.xdg.autostart.nautilus.autostart.desktop: [modified]
mtime.conffile..etc.xdg.autostart.nautilus.autostart.desktop: 2014-07-19T00:30:18.854021