PX4 version 1.13, using a Holybro Pixhawk 6X. Everything else on our vtol is beginning to work quite well, but using the pusher for forward thrust has been misbehaving since I started testing it. When the pusher should be activated, it is instead pulsing from the desired throttle and back to in bursts of about 1/10 second. In fixed wing mode the pusher works fine. It also works when set to RC passthrough.
The issue occurs at all throttle scale values.
Here is a telemetry report from a quick test hop; notice that the actuator control for the VTOL pusher activates, but it pulses rather than holding its value.
https://logs.px4.io/plot_app?log=9bc393c6-7495-44fc-aad6-953802bcd95b
Running out of ideas for a root cause. I haven鈥檛 COMPLETELY ruled out pitch overdamping, but even if I set the min pitch angle to greater than 0, it still pulses, and there鈥檚 no evidence of overdamping when I鈥檓 not using the pusher. So it definitely doesn鈥檛 look likely at all; with VT_FWD_THRUST_EN off, it flies quite well.