DDJ 400 Headphones sound is master only no preview

Hi Forum, Hi Pioneer Team!

Working with DDJ-400 and Mixxx 2.3.5 for windows.

At Headphones jack i can hear only Master output not meter what i do, i can't hear the preview befor moving the track to one of the decks ?

Any ideas what that is ? previosly with other leptop and mixxx 2.3.2 it worked also in my new leptop and reckordbox it works just fine.

Any known issues ?

Thanks in advance