Issue with the crossfader

Hi guys!A little help.I got a DENON MC6000 MK2 from a friend (i’m palying with VitualDj) and when i open the VDJ i have a little issue with the crossfader!When it goes at the end of the right side it start like blinking-moving-goes on the left without even touch it!When i hit the button it goes at his position!This issue is shown both in macos and windows and even is disabled from the options or not!When it;s not disabled i have huge problem because it goes from right track to the left track!!!I have installed all the drivers and firmware before using it!Any ideas?