tray icon stopped working in xfce after update to Ubuntu 14.04

[Mark Grieveson]

After upgrading to Ubuntu 14.04 the tray icon of Goldendict does not work within xfce, whereas it previously appeared. There is no tray icon, even though "close to system tray" is checked in preferences. When I choose "File/Close to tray" it closes but there is not icon in the top panel of xfce.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: goldendict 1.5.0~git20131003-1build1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Apr 28 12:35:35 2014
InstallationDate: Installed on 2014-03-18 (40 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
SourcePackage: goldendict
UpgradeStatus: Upgraded to trusty on 2014-04-24 (4 days ago)

[Launchpad Janitor (janitor)]

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

[ryukusu l. (ryukusu-luminarius)]

Updated from xubuntu 12.04.5 to 14.04.1.
It affects me too.
Pidgin and color notes are working, but other applications not.