My PC audio output defaults to a different device every start-up, which is not the bug, but if I try to change the audio output in-game, Epoch does not recognize the change and no sound comes through. I have to restart the game with the changed audio output before I can hear again. Might just be something related to my instance of Windows and this is just localized to me.
It is a very specific and insignificant bug, but a bug nonetheless I would say.