IPv6 information not shown for dual-stack connection

[Asa Zernik]

I have both IPv6 and IPv4 working on my device - when I fetch www.google.com I can verify that the page is fetched over IPv6, for example. However, when I click on the "Connection Information" option in the network-manager notification menu, I only see the IPv4 connection; the IPv6 section is blank (see attached screenshot).

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: network-manager-gnome 0.9.8.8-0ubuntu4.3
ProcVersionSignature: Ubuntu 3.16.0-34.47~14.04.1-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.10
Architecture: amd64
CurrentDesktop: Unity
Date: Fri May 15 13:10:36 2015
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2013-06-28 (686 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
IpRoute:
 default via 192.168.0.1 dev wlan0 proto static
 172.17.0.0/16 dev docker0 proto kernel scope link src 172.17.42.1
 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.11 metric 9
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=true
 WimaxEnabled=true
SourcePackage: network-manager-applet
UpgradeStatus: Upgraded to trusty on 2014-04-25 (385 days ago)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 F4:F1:E1:C9:9D:10 bluetooth disconnected /org/freedesktop/NetworkManager/Devices/6
 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/1
 eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.8.8 connected enabled enabled enabled enabled enabled