Whenever I try to sort a chest, it sorts, but always takes one item (or one stack of items) out and puts it in my inventory. It seems to be a random item. This almost always happens if there are more than 3 items in the chest. Any idea why?
EDIT:
I realize now that most of the time, the chest just plain doesn't sort. If it does, it sorts in a kind of weird way, not to mention the one item out of place in my hand.

PS I realize this sounds kind of confusing really confusing, so I made a video:
https://youtu.be/5tcTDpAnAQY