"System program problem detected" dialog not shown in launcher

[Vladimir Rutsky]

If "system program" crashes displayed dialog for sending report (/usr/lib/update-notifier/system-crash-notification process) doesn't appears in launcher (no window icon) and in Alt+Tab menu, so if I switch to other window that completely overlaps dialog it becomes problematic to get error reporting dialog foreground.

To reproduce:
1. Make "system program" crash, e.g.

# cat /dev/zero > /dev/null &
[1] 8047
# kill -SEGV 8047

2. "System program problem detected" dialog appears.

Expected behaviour: dialog window should have icon in launcher and be accessible through Alt+Tab.
Observer behaviour: dialog is not shown in launcher and not available in Alt+Tab or Ctrl+Alt+Tab lists.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: update-notifier 0.147.1
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
CheckboxSubmission: 3d16077c4fdd6a017d47f6e3dc4f3c54
CheckboxSystem: b633b4f40868d491c2ae5b50030ce6f3
Date: Thu Jan 9 00:27:55 2014
InstallationDate: Installed on 2014-01-01 (7 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MarkForUpload: True
SourcePackage: update-notifier
UpgradeStatus: No upgrade log present (probably fresh install)
upstart.unicast-local-avahi.log:
 Ср. янв. 8 16:06:33 MSK 2014
 avahi disabled

[Launchpad Janitor (janitor)]

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

[Norbert (nrbrtx)]

Bug exists in Ubuntu 16.04 LTS. Window is not shown on mate-panel.
But it exists on screen:

$ wmctrl -lx
0x01a0000b 0 update-notifier.Update-notifier nikolay-UX32A