Tracks load at double (2x) speed on Deck 2 (Rekordbox + DDJ-FLX4)

Hello
It is probably a setting, but I cannot find the solution for the following problem that I am encountering now with Rekordbox (in combination with DDJ-FLX4) :

When I load a track on Deck 2, it automatically sets the BPM of that track to 2x the normal speed (e.g. 264 instead of 132).  See screenshot.

How do I solve this?  

The strange thing is that this problem does not occur when I open Rekordbox without the DDJ-FLX4 connected. As soon as I connect the DDJ-FLX4, the problem arises.

Thanks for your help