Tracker with FC, GPS, Compass works but no other Telemetrie Infos as the Position

My Tracker moves direction Kopter. On the ground station with MP connected via USB I can see the position of the Tracker and the Copter. But don’t get any other infos from the Copter like altitude, speed, battery voltage, current consumtion and so on. MP connected via SIK direct to the copter, all infos are available. (for this test , Tracker off)
The test was with a distance of 12 m between Tracker and Copter on the ground.

MP Version 1.3.52
Is this correct or an issue?