One included openbox menu has options that return to login screen

To reproduce make your openbox menu the menu provided in /usr/share/lubuntu/openbox/menu.xml on lubuntu in your ~/.config/openbox/lubuntu.rc.xml. Then openbox --reconfigure to update openbox configuration or rebooting would work to get this menu to load in openbox configuration if on an upgrade. Then in run pcmanfm --desktop-pref and click on the advanced tab and make sure show window manager menus on right click is checked. Then right click on the menu and try launching any of the applicatoins other than the web browser or terminal emulator.

The unexpected behavior is that applcations like default document or spreadsheet bring you back to the lightdm login screen. This can be bad because if you have an unsaved document you could lose your data as it starts a new session.

Description: Ubuntu 14.04 LTS
Release: 14.04
lxsession:
  Installed: 0.4.9.2+git20140410-0ubuntu1
  Candidate: 0.4.9.2+git20140410-0ubuntu1
  Version table:
 *** 0.4.9.2+git20140410-0ubuntu1 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages
        100 /var/lib/dpkg/status
openbox:
  Installed: 3.5.2-6
  Candidate: 3.5.2-6
  Version table:
 *** 3.5.2-6 0
        500 http://us.archive.ubuntu.com/ubuntu/ trusty/universe i386 Packages
        100 /var/lib/dpkg/status

Workaround

Making your own menu.xml file for openbox currently works if you input your own commands like firefox and pcmanfm in the execute portions of the menu to launch those applications.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: lubuntu-default-settings 0.39
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic i686
ApportVersion: 2.14.1-0ubuntu3
Architecture: i386
CurrentDesktop: LXDE
Date: Fri Apr 25 12:33:24 2014
InstallationDate: Installed on 2013-07-12 (287 days ago)
InstallationMedia: Lubuntu 13.04 "Raring Ringtail" - Release i386 (20130423.1)
PackageArchitecture: all
SourcePackage: lubuntu-default-settings
UpgradeStatus: Upgraded to trusty on 2014-02-26 (58 days ago)
upstart.lxsession.log:
 ** Message: main.vala:99: Session is Lubuntu
 ** Message: main.vala:100: DE is LXDE
 ** Message: main.vala:131: log directory: /home/brendan/.cache/lxsession/Lubuntu
 ** Message: main.vala:132: log path: /home/brendan/.cache/lxsession/Lubuntu/run.log