thunderbird does not show contact entries in mailing list

I followed the steps from the qa tracker testcase:

http://packages.qa.ubuntu.com/qatracker/milestones/306/builds/55990/testcases/1496

Test-case name: thunderbird/tb-003
This test will check that Thunderbird can create Address Books, Contacts and Mailing Lists

Click on "Address Book" in the top panel
The Address Book should come up.
Create a new address book (File > New > Address Book)
Create a few new contacts (File > New > Address Book Contact)
Create a new mailing list (File > New > Mailing List)
Drag and drop one contact to a mailing list
Drag and drop multiple contacts to a mailing list
Do all of these actions complete with no errors?

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These steps completed without errors. However, the contents of the mailing list are not listed in the table on the right side, and the status bar says the mailing list has 0 contacts. However, on opening the "properties" of the mailing list, the dropped contacts are shown.

This in confusing, and I believe the contents of a mailing list should be shown in the table on the right side.

See screenshot below for how it looks...
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ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: thunderbird 1:24.2.0+build1-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4
Uname: Linux 3.13.0-12-generic i686
NonfreeKernelModules: wl
AddonCompatCheckDisabled: False
ApportVersion: 2.13.2-0ubuntu5
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: daniel 1483 F.... pulseaudio
BuildID: 20131206222113
Channel: Unavailable
CurrentDesktop: XFCE
Date: Wed Mar 5 21:58:43 2014
ForcedLayersAccel: False
IfupdownConfig:
 # interfaces(5) file used by ifup(8) and ifdown(8)
 auto lo
 iface lo inet loopback
InstallationDate: Installed on 2014-02-26 (6 days ago)
InstallationMedia: Xubuntu 14.04 LTS "Trusty Tahr" - Alpha i386 (20140225)
IpRoute:
 default via 192.168.0.1 dev wlan0 proto static
 192.168.0.0/24 dev wlan0 proto kernel scope link src 192.168.0.212 metric 9
Plugins: Shockwave Flash - /usr/lib/flashplugin-installer/libflashplayer.so
PrefSources: prefs.js
Profiles: Profile0 (Default) - LastVersion=24.2.0/20131206222113 (In use)
RunningIncompatibleAddons: False
SourcePackage: thunderbird
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/29/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: CN0Y53
dmi.board.vendor: Dell Inc.
dmi.board.version: A06
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A06
dmi.modalias: dmi:bvnDellInc.:bvrA06:bd07/29/2009:svnDellInc.:pnInspiron1011:pvrA06:rvnDellInc.:rnCN0Y53:rvrA06:cvnDellInc.:ct8:cvrA06:
dmi.product.name: Inspiron 1011
dmi.product.version: A06
dmi.sys.vendor: Dell Inc.