Xfce is broken. What is the reason?

Question

linux

I recently had this problem: xfce broke on Kali Linux.
And not only on kali, first on Manjaro Linux, then on Kali.
Program headers are gone.
Changed configs to default, did not help.

I created a new user, configured everything there, xfce worked fine, and the next time I started the PC, the same problem again.

I found the answer here: https://forum.ubuntu.ru/index.php?topic=175193.0

you need to press alt + f2 and enter the command xfwm4 --replace

It helped on Kali, I haven't tried it on Manjaro yet.

And the question is what is the reason?

.xsession-errors logs