Yes it is. On MacOS Catalina, I have tried every recent version of FMOD and their corresponding integrations with every recent version of Unreal, up to 4.25.4. Not only do some events come across as silence, but some events build and never appear at all in the Content/Events folder. I know my build settings are correct.
By the way, I’m not using the Catalina Mac by choice in this particular case. I’m wondering what combination is definitely stable and working fully on that operating system.
Usually what happens is my first event builds as expected. Whether or not it will play is a coin toss. Sometimes it will, sometimes it won’t. This is for the very simplest possible test events with nothing else going on.
If it plays, I feel temporary relief until I make another event in FMOD. From that point forward, no more events make it to the build folder in Unreal. It just shows the first built event. Coinciding with that is the fact that live update stops working, and I lose the ability to control parameters.