I'm not an expert on these things or even very knowledgeable about Linux in general, but based on my own personal experience that does seem to be the case. All of these bugs(including the one you linked):
https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1577253 https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1572155 seem to be caused by the same issue. Doing a system restart fixes every single one of them(I have experienced all of them). Also noticed that this issue can also cause system updates to be offered even though they where already installed. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-software in Ubuntu. https://bugs.launchpad.net/bugs/1575426 Title: Gnome Software doesn't update after refreshing system repositories Status in gnome-software package in Ubuntu: Confirmed Bug description: This is similar to bug 1583403 but it's a little bit different. [What happens] ============== Installing 1. sudo apt install gnome-clocks 2. After installation completes, open the Software app. 3. Search for clocks. 4. The Clocks app shows up with an Install button. 5. Differently from bug 1583403, Clocks does not show up in the Installed page either. 6. Force-kill the gnome-software background processeither by logging out or by running $ pkill gnome-software 7. Open the Software app. Now Clocks show correctly as being installed. [What should happen] =================== 4-5. The Clocks app shows up with a Remove button in the All page and the Installed page. Similarly, I'm getting prompts to install system updates that I've installed hours before from the command line. (I can file a separate bug for that although it feels like it might be the same issue.) Original bug report =================== Gnome Software doesn't immediately update after updating the system repositories, even after application restart. This results in application versions and other details being listed correctly, even though the correct version will be downloaded correctly. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: gnome-software 3.20.1+git20160420.1.ca63436.ubuntu-xenial-0ubuntu2 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2 Architecture: amd64 CurrentDesktop: GNOME Date: Tue Apr 26 18:53:54 2016 InstallationDate: Installed on 2016-04-23 (3 days ago) InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Release amd64 (20160421) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: gnome-software UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-software/+bug/1575426/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

