I am testing 1.18 release on bench. However, after I armed and move stick up and down for a while, the motors stopped by itself. I do not know what happened. Is it a bug?
I think it is related to this parameter setting: COM_DISARM_PRFLT
The firmware will disarm the motor after a configurable duration if the vehicle is still stay on the ground. Set this param to -1 will disable this behavior.