MP - no parameter data for some elements when TCP

when connecting to AC3.3.1 using MP over TCP protocol (via mavlink hub software on android, like “Pixhawk AC3.3.1 <-> 3DR <-> Telemetry <-> 3DR <-> USB <-> Android MavLink Hub -> TCP <-> MP on Windows”) several parameters do not show data, such as GPS2, Accelerometer2 and Gyro2
when connecting the same MP software directly USB or over 3DR telemetry they show up fine…seems to be an issue only when using TCP…