Gnome shell is sometimes slow to recognize some running apps

[Owais Lone]

In Ubuntu 17.10 and 18.04, gnome-shell takes a few seconds to recognize that an app is running and show it in launcher and alt-tab. It does however show the window immediately in the window spread UI.

This mostly happens with electron apps especially after a cold boot.
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ApportVersion: 2.20.8-0ubuntu5
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
DisplayManager: gdm3
DistroRelease: Ubuntu 18.04
InstallationDate: Installed on 2017-11-19 (30 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Release amd64 (20171018)
Package: gnome-shell-extension-ubuntu-dock
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Tags: third-party-packages wayland-session bionic
Uname: Linux 4.13.0-17-generic x86_64
UpgradeStatus: Upgraded to bionic on 2017-12-01 (18 days ago)
UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo
_MarkForUpload: True

[Owais Lone (loneowais)]

apport information

[Owais Lone (loneowais)]

apport information

[Owais Lone (loneowais)]

apport information

[Owais Lone (loneowais)]

apport information

[Owais Lone (loneowais)]

apport information

[Launchpad Janitor (janitor)]

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

[Waz (paviluf)]

I opened an issue on Gnome bug tracker too

https://gitlab.gnome.org/GNOME/gnome-shell/issues/29

[Daniel van Vugt (vanvugt)]

I noticed code in gnome-shell a while back that looks like it updates this stuff on a 20 second interval. So I wonder -- are you seeing an average of ~10 seconds, and worst case 20 seconds?

[Launchpad Janitor (janitor)]

[Expired for gnome-shell-extension-ubuntu-dock (Ubuntu) because there has been no activity for 60 days.]

[Launchpad Janitor (janitor)]

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