Some Top Icons Disappear After Screen Locks - 17.10

[JaSauders]

Hi friends. I'm testing Ubuntu 17.10 with Gnome 3.26. I noticed some top bar icons disappear after my screen locks and I go back in to my active session. As an example, I currently have Quassel, Telegram, and Nextcloud sync client in the upper right corner displaying their task tray icons. If I lock my screen and re-authenticate back in to my active session, Quassel remains, but Telegram and Nextcloud are gone. The only way to get them back is by closing the application the missing icon belongs to and re-launching it.

Thanks for all of your hard work!

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome (not installed)
ProcVersionSignature: Ubuntu 4.13.0-11.12-generic 4.13.1
Uname: Linux 4.13.0-11-generic x86_64
ApportVersion: 2.20.7-0ubuntu1
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun Sep 24 10:57:24 2017
InstallationDate: Installed on 2017-09-01 (23 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170830)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: meta-gnome3
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[Alan Pope 🍺🐧🐱 🦄 (popey)]

Easily reproducible.

Login to 17.10
launch dropbox (if not already launched)
Launch telegram
Observe icons in taskbar
Lock screen with Super+L
Unlock screen
Icons gone

[Alan Pope 🍺🐧🐱 🦄 (popey)]

Also filed upstream at https://github.com/ubuntu/gnome-shell-extension-appindicator/issues/96

[JaSauders (jasauders)]

Qt upstream report, possibly related: https://bugreports.qt.io/browse/QTBUG-63065

[Andrew Andreev (andrew-andreev)]

This bug can be reproduced on Ubuntu 18.04 (clear installation), as mentioned by Alan, with other apps with tray icons.

[jidckii (jidckii)]

Video with problem:
http://pub.keikogi.ru/gnome_bug.mp4

[snpz (emdzii)]

Ubuntu 18.04 same story.
Workaround Alt-F2 --> r --> Enter

[kinshuk4 (kinshuk-ram)]

Same issue for me on ubuntu 18.04 :(

[Pavel Kokoshnikov (pkokoshnikov)]

Same issue Ubuntu 18.04

[Dominik Steffen (0x6e766c)]

I can confirm this issue on my system with this version/kernel:
Ubuntu 18.04.2 LTS
Linux clds 4.19.0-041900-generic #201810221809 64Bit

Different applications are disappearing after locking the screen while some are still shown after screen lock

alt + f2 -> "r" -> return works as a temporary solution.