Installed software is not showed, local deb files or compiled one in gnome software store

[NickS]

Installing software via gnome software store that has been downloaded from websites does not show in gnome software as installed. Same applies to source installs.

The issue is present regardless of flavor and in 22.04, 22.10 and 23.04 release.

Looking on the internet about people having similar problem, I found that it could be related to the appstream; to quote Zorin OS devs that answered to someone with similar problem with their distro:

"The Gnome Software Store will not recognize packages installed as .deb self-installers. Nor will it see source installs using Make or Ninja."
"Since this is an appstream metadata issue, no one on the forum can "fix" this issue. Only the Gnome Developers can and they were more interested only in fixing anything in Gnome-Software that was going into Gnome 4+. There are some short term workarounds, like removing the Software Cache files and restarting the software store."

[Matthias Klumpp (ximion)]

If the package installs a metainfo file into `/usr/share/metainfo` it should be displayed. Otherwise it will not be displayed, and that is a design decision by GNOME Software as not enough metadata is available.

[Launchpad Janitor (janitor)]

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