Bugged Replay Sound

I recently tried to make a highlight clip using the replay tool, but ran in to an issue with the sound. When viewing the whole game in the replay, or when recording the highlight, there are no issues. However, after the highlight is saved, when played (either in the client or external media player) the sound is very buggy. There are only a few static noises and nothing else. I'm curious to know if this is a bug, or just something wrong with my computer's sound.