In KDE Plasma 5 Kicker menu, I changed properties of program to run it as root. But then I re-enter in settings, these changes looks not saved; also running program via Kicker still runs as regular user. However, ~/.local/share/applications/*.desktop file is changed and running it directly – will ask for root password.
Created attachment 102542 [details] video.webm
Can you try again with a later KDE Frameworks release? I recall there being some issues with saving application settings that were fixed. I cannot reproduce the issue here.
Can't reproduce either.