It seems from some videos I have seen, if you save a game while standing, crouch, and then reload the save, you will still be crouching. This can be quite an inconvenience for people who may not notice, yet wonder why they're moving so slowly. It's mostly observed if the player sustains critical blood loss ("You feel weak from the blood loss") and then reloads either after dying, or manually reloading.

Yeah, I know that phenomen, it's a bit ticky but it doesnt really bother me.