Adding new location to date/time picker does not consistently autocomplete

[Ian Nicholson]

When I navigate to System Settings - > Time and Date -> Clock -> Choose Locations, I'm prompted to add or remove a location from the current locations. When I click the new location icon, I can enter a location name, however I'm only offered an autocomplete list when there are three letters typed. For example, I would like to add "Beijing" to the list, but I'm only presented with an autocomplete list when I type "Bei", and "Beijing" is not on that list. Any more or fewer letters and the list disappears. If I type anything besides "Bei", I'm not presented with a list of possible options either.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: unity-control-center 15.04.0+15.04.20141217-0ubuntu1
ProcVersionSignature: Ubuntu 3.16.0-28.38-generic 3.16.7-ckt1
Uname: Linux 3.16.0-28-generic x86_64
ApportVersion: 2.15-0ubuntu3
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Dec 18 20:19:18 2014
InstallationDate: Installed on 2014-12-11 (8 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141210)
SourcePackage: unity-control-center
UpgradeStatus: No upgrade log present (probably fresh install)
usr_lib_unity-control-center: deja-dup 32.0-0ubuntu1

[Launchpad Janitor (janitor)]

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

[Jonas G. Drange (jonas-drange)]

I've been reproducing this with "S", "Sy", "Syd", "Sydn", "Sydne" and "Sydney".

Reproducable:
Always

[Paul White (paulw2u)]

Adding my own example of Bristol, UK

If I type "B r i s t o" then "Bristo (United Kingdom)" is displayed. A location which obviously does not exist.

I have to type the full city name of "Bristol" before I see the correct match.