Steam Deck creaks

I’ve had a Steam Deck OLED for a few months and I recently noticed that when I apply some pressure to the back left hand side of it, there is a distinct creaking sound.

It doesn’t bother me that much but it kinda scared me the first time I heard it. Is this a common flaw? If it will never affect performance or lead to a failure in the unit then I don’t care but I’m just curious if it’s something to worry about.