Disarm by Land Detector in the air (no gps and airspeed sensor))

Hello!
Today I’ve crashed my new plane, it was my first flight with PX4 for fixed-wing.
I’m not using GPS and airspeed sensor, just wanted to fly in manual and stabilize mode.
3 times of 5 flights my plane was disarmed in the air by LandDetector (and crashed) and I think this is something that should be fixed, FW LandDetector should be improved

Hey @Yuriy_Homyakov ,
Sorry to hear about your crashes. Can you share a flight log, please?

Here is log file
https://logs.px4.io/plot_app?log=751e8fff-19e3-496a-84b8-affad8d1eba8
You can see several Landing Detected messages - all were in the air, then Disarm by landing

@dagar you have any idea here maybe?