When I am eating in game, it may have chance to cause the following problems: only one of my ears can hear the sound of eating. It just like one of my ears has gone deaf. What is worthy of noticing is, this phenomenon is more likely to happen when you turn on "Sound Strengthen"(I don't know if this name is Windows English version's name) function in Sound Settings of Windows.

Besides, this is bound to happen when you eat while walking to the right or left, as the comment below says. But what disturbs me is, even if you stop moving the character to left or right, this one-side-sound problem will still exist and influence the next following 1-2 eating behaviors, after that it will become normal.