Reproduce:
- Create sound mix (like shown above)
- Create sound class (like shown above) which applies effects
- Set sounds you want to play to use this sound class
- Play long sounds (like music)
- Create blueprint to call
Push Sound Mix Modifier
(with created sound mix as parameter) on key press - Start game in PIE or otherwise
- Press key
Result:
- On macOS (tested on 10.11.6) all sounds of that sound class get silent with periodic audible artifacts sounding like “ticks”
Expected:
- Effect (low pass filter in this case) gets applied to all sounds having sound class (like on Windows and Linux)
Note:
- Tested on 4.14.3 and 4.13.2 which both have this issue.