With the new release of RB 4.06 it's now possible to map your buttons. So I added a PREVIEW START/STOP command to the BACK button on the DDJ RX. So when scrolling trough my songs I can listen on my headphones the song i've selected with one press of a button. But when I do this, the on air deck stops, and on my headphone the selected song starts playing! And I have not added two commands to the same button. I've also tried it with some other buttons but all the same. This looks like a bug but also a dangerous one.
Further more, I have set NOT to autostart a track when loading it in a deck. But when I do this, sometimes it does autostart. This happens when a song has been played completely till the end. When loading a new song it will autostart, even if you have set autostart to OFF.