Comment 4 for bug 1826003

problem also selecting 'show details' of an app from launcher. Ubuntu software does not find himself
here my sources.list:
corrado@corrado-HP-p4-ee:~$ cat /etc/apt/sources.list
#deb cdrom:[Ubuntu 19.10 _Eoan EANIMAL_ - Alpha amd64 (20190421)]/ eoan main restricted

# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://it.archive.ubuntu.com/ubuntu/ eoan main restricted
# deb-src http://it.archive.ubuntu.com/ubuntu/ eoan main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://it.archive.ubuntu.com/ubuntu/ eoan-updates main restricted
# deb-src http://it.archive.ubuntu.com/ubuntu/ eoan-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://it.archive.ubuntu.com/ubuntu/ eoan universe
# deb-src http://it.archive.ubuntu.com/ubuntu/ eoan universe
deb http://it.archive.ubuntu.com/ubuntu/ eoan-updates universe
# deb-src http://it.archive.ubuntu.com/ubuntu/ eoan-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://it.archive.ubuntu.com/ubuntu/ eoan multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ eoan multiverse
deb http://it.archive.ubuntu.com/ubuntu/ eoan-updates multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ eoan-updates multiverse

## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
deb http://it.archive.ubuntu.com/ubuntu/ eoan-backports main restricted universe multiverse
# deb-src http://it.archive.ubuntu.com/ubuntu/ eoan-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu eoan partner
# deb-src http://archive.canonical.com/ubuntu eoan partner

deb http://security.ubuntu.com/ubuntu eoan-security main restricted
# deb-src http://security.ubuntu.com/ubuntu eoan-security main restricted
deb http://security.ubuntu.com/ubuntu eoan-security universe
# deb-src http://security.ubuntu.com/ubuntu eoan-security universe
deb http://security.ubuntu.com/ubuntu eoan-security multiverse
# deb-src http://security.ubuntu.com/ubuntu eoan-security multiverse

# This system was installed using small removable media
# (e.g. netinst, live or single CD). The matching "deb cdrom"
# entries were disabled at the end of the installation process.
# For information about how to configure apt package sources,
# see the sources.list(5) manual.
corrado@corrado-HP-p4-ee:~$