Broken image of my desktop after logging in – XFCE

I’m running 21.2.1 (XFCE). Whenever I log in, Manjaro shows a sort of broken snapshot of my desktop as it looked like when I last logged out.

So, say if I had Mousepad open with a text file before I logged out, it shows an image of that.

By “broken” I mean that there are random pixelations. Then my default desktop shows up normally after a few seconds… I do not know why this is happening but this leads to some security issues.

I wonder why this is happening and hope someone could share a fix so that my bare default desktop just shows up.