After uninstalling some apps (e.g. a LibreOffice package) and installing them again after some time there are two app bars in Ubuntu Software menu - one with "remove" and one with "install" button for every app previously uninstalled.
And none of those buttons work - the bar starts loading, but doesn't finish installing/removing an app (in every case it's pretty the same).
What's wrong? Do I have to do some special disc cleaning after that issue?
Or will just
sudo apt-get autoremove be enough?
I use Ubuntu 16.04 with GNOME instead of preinstalled Unity.