Strnage behaviour plasma panel

[Roefy]

Since yesterday, I have a strange behaviour of my plasma panel. Removing all the plasma folders in de .config folder does not help. See link for a screenshot. https://docs.famymker.nl/index.php/s/KTqkbmBT3g8E4RB
What could this be?

[Teunis]

Did logging out (and in again) not solve the problem?

Which video driver are you using, maybe Nvidia?

[chimak111]

This seems similar to others with AMD GPUs.

[Roefy]

Sorry for my late reply, but I could not react on the forum.
Logging out and in again did not resolve the problem, also a restart did not work.
Now I upgraded from Kubuntu 18.04 to 19.04, and that solved the problem. So what it was? I have no idea.

[chimak111]

Please note that Kubuntu 19.04 is no longer supported. You need to use 19.10 or 18.04 to get security updates.

[Don B. Cilly]

It looks a lot like this.
The AMD GPU bug is referenced in post #13.

[paydaydaddy]

I had the same problem. I got around it by going to >system settings>Display and Monitor>Compositor>Rendering Backend>choose XRender. This fixed it for me and so far I have noticed no difference in performance, although I admit that I don't do much to push a system very hard.