DShot ESC telemetry - voltage and current values choppy

I’ve setup the DShot ESC telemetry in a twin motor plane.

Pixhawk 2.4.8
DShot ESC: one is Racer Tattoo 52A, another one of a different type (I don’t remember)
ArduPlane 4.0.3 fmuv3

When connected to Mission Planner or APM Planner, the voltage and current readings from the motors are cyclically disappearing and appearing again (with the frequency ~0.5 Hz). This is reflected in the telemetry logs. The readings for RPMs are fine, not going to zero and back.

log

clouds_esc_telemetry_problem.param (20.4 KB)