Throttle Failsafe Problem

I just got my pixhawk all connected, when i tested the failsafe I noticed a problem. When I unplug the RC input from the pixhawk the throttle stays at whatever the last value was. If the RC input gets disconnected during flight the failsafe won’t activate and it will fly away.

Does anyone know a way to solve this?

Yesterday I removed the props and tested it while armed and everything functioned as it should when removing the RC connection:

armed no moment - disarmed
armed with moment and throttle - rtl/land

I thought in the past I tested the APM without arming but i may have been connected via USB and not wireless.

Some RC Controllers require certain configuration, which one are you currently using?

Also please try this method found on the wiki