Kernel 5.12 or libinput problem

After upgrading to current packages XFCE stopped working - 10-20 seconds after starting X keyboard stopped responding, also start/desktop menu... Alt+Ctrl+F6 works, and keyboard in the terminal works.

I downgraded to kernel 5.10.41 and libinput 1.17.3 and everything works fine.

(Platform: Lenovo t480 with ultra dock)