XDJ-Aero Sync problem

I have just found a problem using the Sync button. It is the same on both firmware versions 1.02 and 1.06. When I play the tracks and the last one ends, the new track becomes a master track and from time to time if I move the pitch a little on the new track - the original tempo i jumping to the current 'pitch' position. Usually, It is working fine and the moved pitch depends of the bpm - like it was designed. So, If the new tempo is 122 bpm and the pitch is still on 118bpm - I have to adjust it and 'catch' 122bpm position - and that prevent the jump. I am getting the problem a few times during 2-3 hour set everyday, but it is for sure, and it is a shame to hear the tempo jumps from 123 to 118bpm for example. I am not sure and I can't find the reason why it is happening, my guess is this could come when i press stop button before the track finish by itself, or when I touch the filters or jog to adjust the pitch. I can't say for sure. My all tracks are analyzed by newest recordbox, mp3's are 320 from beatport. If the problem happens, the number of bpm becomes a % pitch on the display, and the jump is coming in the same time.