Why is this sound bug still a thing?

[jlcame]

It's been years since this bug, that as accompanied the evolution of the game since the beginning, has not been fixed!
I started playing again after 3 years break to try the new island dlc, but i'm immediately turned away because this stupid sound bug still has not been fixed.
Here's a video of the bug. Before i could just exit the game and run it again and it would fix itself, but now no matter what i do, the sound is stuck. Guess i'll take another 3 year break and see if this bug is still present... Probably it will.

 

[jlcame]

I've had some free time trying to figure out a solution, and i couldn't find it. So i have decided to do some of the devs work and actually document here the leading cause of this old game breaking bug.
I post here clip of it happening with detail.
Now, this causes the worst bug since it gets stuck permanently unless you load a previous game session. So this makes the Air-Ops useless unless you are willing to load the game from a previous save every time you use them.
Other causes are when danger is too high and when you have the riot teams on the map. But this is less aggravating since it goes away when the threat level goes away or when riot guards goes away also.
Now, i've done my part reporting a bug that is already all over the internet with complaints, please devs, fix your game.