it looks like there isn’t enough drag to slow it down? as the engines are at idle and for approach mode it will prioritize the descend path rather than speed. for stall speed it’s weird, could be the probe icing problem having the air speed unreliable, Ground speed at 115 knts and 20knts headwind just don’t add up to 200knts air speed.
Fenix have announced in icing condition current MSFS have a bug where even all heating is up it still got frozen probe and resulting in AP and airspeed being crazy.
I guess the airspeed was stuck and you are actually at a much lower speed, and since the ADI showed you are already at 10 degrees pitch up and 800fpm descend, it’s approaching the stall pitch angle thus the stall bar goes up.
I once have encountered similar situation, I manually go higher thrust to bring my ground speed to something more reasonable, go full flaps and landing gear and fly by eyes, just use GS and glide angle to guestimate the proper airspeed (like, at approach descend fpm the pitch up should be around 3-5 degrees up max), you can see in my video here:
around 27min mark