Unable to invert axis

[aurocia]

Hey, 

I tried binding rudder axis but its inverted. I press invert axis but there is no effect, please investigate and fix this bug

[LeCuvier]

I have checked this on my rig, and the "invert" setting certainly works. You had already posted the same subject under a different tile on 27-May.
Have you verified that no other game controller is bound to the rudder axis? DCS World unfortunately creates a lot of duplicated bindings when you add a game controller. You need to remove all unwanted bindings.