Submenus in the home folder disappear after a while, reappear after reboot

[Cedara]

When I'm opening the home folder with the file browser (nautilus) the menu items have no submenus anymore. The bug doesn't appear immediately after log on, only after a while. I haven't been able to determine what sets the bug in motion, only that I can work around it by rebooting.

Sidenote: I'm using screenlets which always set off a crash after log on. Also, I'm using Opera, where the operapluginwrapper (flash) sometimes crashes.

I haven't seen anyone else having the same kind of problem at askubuntu or in any other forums.

nautilus version used: nautilus 1:3.4.1-0ubuntu1

My system: Ubuntu 12.04 LTS,
AMD Athlon(tm) 64 X2 Dual Core Processor 5600+ × 2,
nvidia GeForce GT520,
2GB RAM

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: nautilus 1:3.4.1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14
Uname: Linux 3.2.0-24-generic-pae i686
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu7
Architecture: i386
Date: Mon May 14 12:43:16 2012
GsettingsChanges:
 org.gnome.nautilus.window-state geometry '800x550+65+24'
 org.gnome.nautilus.window-state maximized true
 org.gnome.nautilus.window-state sidebar-width 327
 org.gnome.nautilus.window-state start-with-status-bar true
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: nautilus
UpgradeStatus: No upgrade log present (probably fresh install)

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Marking Incomplete, please re-open if you can reproduce this bug on 14.04, 16.04, 17.10, or 18.04 and describe how you reproduced the bug

[Launchpad Janitor (janitor)]

[Expired for nautilus (Ubuntu) because there has been no activity for 60 days.]