Hey im so sorry I forgot to attach the screenshots my bad haha
screenshot 2

screenshot 3
Also the screenshot I got from a youtube video of the barracks building where the door-opening sound glitch happened
The door that is glitched is on the first floor on the side where there are only two rooms. It is the door to the left when you turn down into the hallway.
And sorry I can't screen record on my device as of now. Hopefully these screenshots can be of better explanations.