Well...?

Immediately after posting this image, OP's DE crashed and he was never heard from ever again.

KDE text editor.

That definitely says Ubuntu.

It works for me.

I mapped the command:
DISPLAY=:0 kwin --replace

to a hotkey for the rare occasion that my DE acts up. I can keep this sucker on for MONTHS.

>kde

on opensuse leap it is, at least

Looks like you're new to gnu/linux, user! It might be helpful for you to know that Kubuntu is just Ubuntu with KDE, user. In a similar fashion, Xubuntu is Ubuntu with XFCE, and Lubuntu is Ubuntu with LXDE.

t. person from the past

Actually it does.

See