Double input required

[SrSosio]

Hey there. This is probably a known thing and easy fix, but I've noticed that the TM warthog throttle sometimes require double input in order to register a click. What I mean by this is for example to turn off the APU switch, I have to turn it off, then on again and off one more time so the game registers it. Or move the throttle to idle, back to off and back to idle to register the idle position. 

Do you know why is that and how to fix it? 

Thanks