Running from a prone position

[mudd]

I have noticed recently that anytime lately, i am prone (waiting for ET or EI to run by so coast is clear) the game won't allow me to immediately run (L shift + W) and says the denial info "action not allowed" or whatever the statement is ,and i end up only crawling as if i was in a crawlspace without the room to stand. When this happens i have to release all buttons and cycle the prone (V) once before it will behave as normal again. However it is recreated (everytime) by laying prone near a tree or structure for a minute, i must go through the process of cycling it again (away from the structure or tree) and it leaves my inf vulnerable as i have to sit in the open doing this. Has made sapping or zooking target difficult as it adds a whole sequence to the action.