network manager cannot configure pptp VPN

[Gordon Ball]

Release: vivid (fresh install)
Packages:
    network-manager 0.9.8.8-0ubuntu34
    network-manager-pptp 0.9.8.2-1ubuntu2
    network-manager-pptp-gnome 0.9.8.2-1ubuntu2

After installing network-manager-pptp-gnome, it is not possible to add a PPTP VPN from the networkmanager GUI.

What I expected to happen:

    Network -> Add Network Connection -> VPN -> Select PPTP and configure with GUI

What happened:

    Network -> Add Network Connection -> VPN
    pptp is not listed as a possible VPN type. Cannot graphically configure VPN.

Possible cause:

    Copying an existing VPN configuration to /etc/NetworkManager/system-connections results in a VPN which does work. The option to add a new one is possibly because of a missing file:

    /etc/NetworkManager/VPN/nm-pptp-service.name includes:

    [GNOME]
    properties=/usr/lib/NetworkManager/libnm-pptp-properties

    which does not exist after installing the above packages.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Kurt Kraut (kurtkraut)]

I'm impressed by this bug. This is a huge regression. Sadly, PPTP is still one of the most adopted protocols for VPN and for Ubuntu 14.10 and later versions it is not possible to add/set a PPTP client. This feature is totally vanished from NetworkManager GUI, even with the package network-manager-pptp-gnome installed. Could any dev take a look at this, please?