Hi all, curious if anyone's seen this before, or know how to get rid of this plague.

Somehow I randomly trigger this KDE widget board "feature" on the entire left side of my primary display, shows a "Default" desktop display, but no idea what it is, or what it is supposed to do as it does nothing far as I can tell.  I can't get rid of it, I can't identify it, and it stays on top of most everything, effectively removing about 20% of my desktop when I trigger it with some unknown hotkey accidentally.  I don't even know what to call it to google "how to get rid of x".

It's super frustrating, this is like the 3rd time I've done it, and all I can do is restart the desktop to be rid of it.

Whoever included this as a "feature" was smoking crack at the time.  See below for a screen shot.

Thanks in advance for clues!