Some subtitles say weird things that aren't actually happening, for example: when you level up, the subtitle says "player dings".
can be confirmed for:
leveling up ("player dings")
chicken laying eggs ("chicken plops")
picking up item ("item plops")
opening a shulker box ("shulker opens")
closing a shulker box ("shulker closes")
this may be very confusing for deaf players which is why I reported this bug.