Yeah definitely not correct behavior for pretty much any constant speed prop- no oil pressure, no angle change.
So I am on both aircraft right now, I was hired into the caravan and upgraded to the SkyCourier earlier this year. When my currency runs out for the caravan next year I’ll be full time 408.
Speaking of the 408, I actually refunded the limited edition or whatever it was that had the 408 because that was the only plane I was interested in, beyond just the gamepass version of the sim which I already have. Between the 408 being basically an external model only with who knows what underneath and the fact you can’t even use it in career mode was enough for me to refund. If the 408 starts getting some serious love or Carenado takes me up on my offer to SME for them I’ll get back into it. But for now gamepass version only for me.