Шаги для повторения:

```
sudo control fusermount public

sudo apt-get install snapd flatpak # для p10, а для p9 - только flatpak
sudo flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

wget -c https://github.com/app-outlet/app-outlet/releases/download/v2.1.0/App.Outlet-2.1.0.AppImage
chmod +x App.Outlet-2.1.0.AppImage
./App.Outlet-2.1.0.AppImage
```

Выполнение последней команды приводит к ошибке:

```
$ ./App.Outlet-2.1.0.AppImage
[4049:0712/105815.943068:FATAL:setuid_sandbox_host.cc(158)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.private/alt/.mount_App.Oun3az3o/chrome-sandbox is owned by root and has mode 4755.
Trace/breakpoint trap
[alt@localhost ~]$ /tmp/.private/alt/.mount_App.Oun3az3o/app-outlet: error while loading shared libraries: libffmpeg.so: cannot open shared object file: No such file or directory

$ journalctl -f
Jul 12 10:58:15 localhost.localdomain kernel: traps: app-outlet[4049] trap int3 ip:55c2810ad649 sp:7ffdacf43440 error:0 in app-outlet[55c27ea4a000+6068000]
Jul 12 10:58:15 localhost.localdomain systemd[1]: tmp-.private-alt-.mount_App.Oun3az3o.mount: Deactivated successfully.
```

В p9 все работает без проблем.