I’m pretty sure this is a bug though. I un-mapped the binding to allow my throttle to go into beta to make sure it wasn’t getting there. The same is happening to me. I don’t think it is just the prop windmilling faster once the throttle goes below 30% or so.
To test it, i would cut the throttle while flying level and then pitch up to bleed off speed. The prop winds out the whole time with the throttle at idle as if its under power. Further, a full power steep dive with the prop set to max shows a prop rpm of 1975. But a shallow glide to land will wind out the prop to 2465 rpm as soon as the throttle goes below 20-30%. When its winding out, the aircraft doesn’t act is if it has full throttle but it’s definitely not low power or idle power. Makes it very hard to land properly.
Something seems way off with this one.
Feathering does work but you shouldn’t have to feather to land.