no bug Sound on external F2 view not heard in front of the aircraft

[Beanbake]

Sound on external F2 view not heard in front of the aircraft, only back 180 degrees. 

 

[Ian Boys UK]

That's because you are going above the speed of sound. Slow down and you'll find it works fine.

Above Mach 1 the a/c is outrunning the sound forwards.