Nautilus overwrites user directory config when mounted with nfs

I am running Ubuntu 14.04 with Gnome Shell 3.12.1. I use a network file server for most of my user home directories. To do this I mount a remote drive from a network server via nfs at boot time:

$ tail -n 2 /etc/fstab
# Remote NFS home
homeserver:/home /homeserver nfs rsize=8192,wsize=8192,timeo=50,hard,intr,async,nodev,nosuid 0 0

and have configured the user directories in Nautilus thus:

$ cat ~/.config/user-dirs.dirs
# PLACE ME IN ~/.config
# This file is written by xdg-user-dirs-update
# If you want to change or add directories, just edit the line you're
# interested in. All local changes will be retained on the next run
# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
# absolute path. No other format is supported.
#
XDG_DESKTOP_DIR="/homeserver/user/Desktop/"
XDG_DOWNLOAD_DIR="/homeserver/user/Downloads/"
XDG_TEMPLATES_DIR="/homeserver/family/Templates/"
XDG_PUBLICSHARE_DIR="$HOME/"
XDG_DOCUMENTS_DIR="/homeserver/user/Documents/"
XDG_MUSIC_DIR="/homeserver/family/Music/"
XDG_PICTURES_DIR="/homeserver/family/Pictures/"
XDG_VIDEOS_DIR="/homeserver/family/Videos/"

Everything is fine until I reboot. Then Nautilus overwrites my custom configuration (despite the file header comments):

$ cat ~/.config/user-dirs.dirs
# This file is written by xdg-user-dirs-update
# If you want to change or add directories, just edit the line you're
# interested in. All local changes will be retained on the next run
# Format is XDG_xxx_DIR="$HOME/yyy", where yyy is a shell-escaped
# homedir-relative path, or XDG_xxx_DIR="/yyy", where /yyy is an
# absolute path. No other format is supported.
#
XDG_DESKTOP_DIR="$HOME/"
XDG_DOWNLOAD_DIR="$HOME/"
XDG_TEMPLATES_DIR="$HOME/"
XDG_PUBLICSHARE_DIR="$HOME/"
XDG_DOCUMENTS_DIR="$HOME/"
XDG_MUSIC_DIR="$HOME/"
XDG_PICTURES_DIR="$HOME/"
XDG_VIDEOS_DIR="$HOME/"

As a work around, I recopy the former user-dirs.dirs file back to ~/.config/user-dirs.dirs, kill and restart Nautilus and everything is fine again, except that I have to do this every time I boot.

Please, any advice on how to make my nfs mounted custom configuration stick. Thanks in advance!

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: nautilus 1:3.12.2-0ubuntu1~trusty2 [origin: LP-PPA-gnome3-team-gnome3-staging]
ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: i386
CurrentDesktop: GNOME
Date: Wed May 28 21:24:44 2014
GsettingsChanges:

InstallationDate: Installed on 2014-05-04 (24 days ago)
InstallationMedia: Ubuntu-GNOME 14.04 LTS "Trusty Tahr" - Release i386 (20140416.2)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)