Sound cones don't work in P3D v4?

#1
Has anyone noticed this? Or maybe I'm doing something wrong? Even with these settings the sound can be heard all around the aircraft. I was expecting it to be heard only when looked from behind...

Code:
[TAILROTOR]
filename=TailRotor
flags=0
viewpoint=2
rparams=0.713024,0.893617,1.000000,0.936170
vparams=0.672358,0.000000,0.702439,8.070175,0.753659,21.578947,0.814634,29.298246,0.885366,32.105263,0.930894,32.631580,0.975717,32.978722,0.999187,32.280701
insideConeAngle=70
outsideConeAngle=190
conePitch=0.000000
coneHeading=180
outsideConeVolume=0
full_Scale_Distance=50
link=IDLE
 
#2
Okay, some observations.

1. Headings like 180 don't seem to work. You have to use 179.999 or -179.999
2. Sometimes P3D just messes up the whole sound system. I made this stuff work, but then at some moment I opened the spot view and suddenly all the sounds were messed up, ignoring cone settings.
 
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