I don’t think it’s 100% known what causes it in the case of those planes, but it is something that is very easy to cause on purpose for replication by using the wrong output bus for the sound in wwise. All sounds in the _AI wwise package needs to be routed to the _ai output bus, not the _player outbut bus.
I don’t think we can decompile the packaged .pck sound file, so there’s no way for anyone but the dev to verify if it’s something simple like this or if it’s a different, more complicated problem.
I would think that if it was this simple mistake it would have been fixed minutes after the first report, so that suggests something more complicated.
This was happening since before SU11 (First I remember was in Jan 2022), but SU11 was the first time a default plane had this problem, so it affected everyone.
