Weird textures on KDE Plasma 5.0

When I use the Task Switcher (the one that opens when you push your mouse to the top-left corner), it usually works. But sometimes, when I force it when its laggy, the whole desktop crashes. And the switcher doesn’t work anymore. The application menu bar is just black and white with no effects. No zoom on hover on the latte dock or any other desktop effects like minimizing. I had to reinstall Manjaro last time but I think you guys can help me out. Below are images.

My friend said its a compositor crash. And happens cuz of weird widgets, is the candy icon theme affecting anything?