MIDI learn bug (new bug)

Pulse, thanks for passing on my request to map Preview for related tracks.

While playing around I found a bug with the MIDI mapping.

To make sure it wasn't due to me editing the default XML, I used a clean XML with default DDJ-RZ mapping and used an extra midi controller laying (Kontrol F1).

I mapped PReview-Start and Preview-Skip to the new controller.  If the right deck is playing and we preview a track, it somehow acts like pressing "play/pause" on that deck and slows it down to a stop. Seems to only affect right deck when it is playing. 

Somehow it thinks Preview-Start is the same as PLAY/Pause ?? 

Thanks