Clock in panel won't update in response to changing time zone

[Daniel Gimpelevich]

I'm here at Xubuntu Global Jam, and I booted this live session using a USB stick prepared with UNetBootIn on my EeePC 900A that I retrofitted with a resistive touchscreen. I right-clicked on the clock in the panel and selected Properties. I then changed the time zone to where I am, and it showed the current local time in the window, but the clock in the panel is still pinned to UTC.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: xfce4-panel 4.11.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.18.0-12.13-generic 3.18.4
Uname: Linux 3.18.0-12-generic i686
ApportVersion: 2.16-0ubuntu1
Architecture: i386
CasperVersion: 1.350
CurrentDesktop: XFCE
Date: Sun Feb 8 15:33:19 2015
LiveMediaBuild: Xubuntu 15.04 "Vivid Vervet" - Alpha i386 (20150208)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xfce4-panel
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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