Low volume when using fader

Hi,

don't know if this was already pointed out, but on several latest rekordbox versions, when two tracks are loaded in player and crossfader is used to "mix" them, volume of track on seperate channels is normal (or maybe even slightly higer than usual), but in the middle when they are mixed together, volume is really low and not what i would expect.

Is this normal? Is this acknowledged and is going to be fixed?
Is it by design? Am I alone? :)