No sleeping animation

So this only ever happened once, but I was kind of freaked out when it happened. basically, I went to bed in my hardcore world as usual, but for some reason, the “sleeping through the night” screen didn’t pop up, and I was just in first person with the camera right on top of the bed. I couldn’t move or jump, and the second I went into 3rd person to see what the heck was going on, I woke up. I am extremely confused as to what happened, because I was not doing anything different or unusual.