I've been using OpenSuse (10+ years) and migrated to Ubuntu 16.04.
All my habits, all my needs for desktop are from the past, KDE3, KDE4.
I'm using kubuntu-desktop on ubuntu 16.04. Mostly all of my needs (except quanta plus - RIP) are satisfied.
My last problem is with app shortcuts in panel. I creat "link to app" on the desktop (standalone static version of app placed in my home) with custom icon (linked also from the app directory) all works ok, icon is presented. If I copy/move this link to app to the panel as seen in screenshot icon is missing. If I try to edit this shortcut there is empty dialog, only nonsense "keyboard sortcut" setting.
So how can I add proper icon for this icon shortcut?
p.s. I have my reasons to use standalone version of firefox instead of repositories