When opened kdenlive from konsole (Terminal) it gives the following error
QStandardPaths: wrong ownership on runtime directory /run/user/1000, 1000 instead of 0
KDE Desktop detected, using system icons
“Session bus not found
To circumvent this problem try the following command (with Linux and bash)
export $(dbus-launch)”
And when opened from all apps it opened like broken; and does not respond properly.
Apparently you are trying to run it as root inside a normal user’s desktop session.
DON’T!
Run it as user.
You should be able to just select it from your desktop’s application menu anyway.
If you want to run it from Konsole, don’t use “Terminal - Super User Mode” nor run “su” first.
PS: Apparently I overlooked this sentence between all the rest:
And when opened from all apps it opened like broken; and does not respond properly.
Running it in Konsole (as user, not root) may give a clue.
Trying to run it as root may actually have broken it for the user (e.g. the config files may be owned by root now).
So it may also be helpful to try it on a fresh user account.