Can't change screen locking wallpaper in Maui 17.03

[RealPTR]

  I've tried to change the screen locking wallpaper (it's a solid colour by default). It should be in System Settings -> Display -> Screen Locking -> [tab] Wallpaper. But I get this glitch in System Settings instead (see, attached screenshot). I does NOT hang the laptop. I can easily go back to other options in System Settings just by clicking them.

I'm running my Maui on Lenevo Yoga 2 Pro

[leszek]

Looks like a graphical glitch. Tried resizing or moving the window already ?
Anything useful on the terminal when started from the terminal ?

[RealPTR]

Looks like a graphical glitch. Tried resizing or moving the window already ?
Anything useful on the terminal when started from the terminal ?

Yes - tried moving or resizing the window. No change. Also clicking buttons inside the "glitched" area brings no action. But clicking in the side menu does what it should (take you to another panel of settings).

Terminal prints this after clicking "display":

Code:

$ systemsettings5
kscreen.kcm: LOAD
kscreen.kcm: Activate output 67

And nothing else after cliking further: Screen Locking -> Wallpaper