Crossfader error on Rekordbox 5.5.0

Hello all

I have DDJ RX Controller, and i don't know if it's a bug or a bad configuration. The problem is with the crossfader. I put the crossfader to the right only a little bit (he first line):

But Rekordbox put the crossfader totally to the right:

The same problem if I move the crossfader to the left:

I try to adjust the crossfaer curve in the controller and don't work (it seems thaht it does not do anything). In previus version of Rekordbox works perfect (and I don't make any updates of the firmware, windows, etc..). It's a bug or bad config?

Can anyone help me?

Note: the firmware and software are update to the last version.

Thanks