network-manager-pptp forgets to add a route when connecting to (split) VPN

What I expected to happen:
Connect successfully to company VPN, use company resources normally.

What happened instead:
Connect successfully to company VPN, can not do anything, network is dead.

The company VPN is set up only for some services, so in the VPN-settings,
"Use this connection only for resources on its network" is checked.
It is working on Windows without any problems, so i looked at the routing table
and saw that a route is missing on ubuntu:

original routing table, vpn enabled:
$ route
Kernel-IP-Routentabelle
Ziel Router Genmask Flags Metric Ref Use Iface
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
10.20.40.100 * 255.255.255.255 UH 0 0 0 ppp0
link-local * 255.255.0.0 U 1000 0 0 eth0
192.168.1.0 * 255.255.255.0 U 1 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0

"fixed" (in my case) routing table, vpn enabled and fully working:
$ route
Kernel-IP-Routentabelle
Ziel Router Genmask Flags Metric Ref Use Iface
default 192.168.1.1 0.0.0.0 UG 0 0 0 eth0
10.0.0.0 * 255.0.0.0 U 0 0 0 ppp0
10.20.40.100 * 255.255.255.255 UH 0 0 0 ppp0
link-local * 255.255.0.0 U 1000 0 0 eth0
192.168.1.0 * 255.255.255.0 U 1 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0
193.XXX.XXX.XXX 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0

The workaround is to add a route manually, targeting the company network, using ppp0

Windows adds this route automatically.

Please fix this bug, this was very time-consuming and annoying to find out the root cause of the problem.

$ lsb_release -rd
Description: Ubuntu precise (development branch)
Release: 12.04

$ apt-cache policy network-manager-pptp
network-manager-pptp:
  Installiert: 0.9.2.0-1ubuntu1
  Kandidat: 0.9.2.0-1ubuntu1
  Versionstabelle:
 *** 0.9.2.0-1ubuntu1 0
        500 http://at.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
        100 /var/lib/dpkg/status

This bug appears in Ubuntu 11.10 too.