Don't know if anybody else noticed it, but after you score, your crouch animation is real messed up (when you try to crouch, you just bounce up and down)
Doesn't bug me too much, i like to jump around and it looks like im rolling on the ground
the crouch bug was removed, but people wanted it back so its been readded. it was originaly removed because somehow it got buggy as you are explaining. so its nothing new.
its cause of that stupid jump counter... it works by change in height or sumthin... it thinks your jumping down, but since your feet are on the ground it makes you stand up...