I don't mind this feature but it is usually something stupid that causes it. Occasionally I'll be climbing up a ladder then when I get to the top my player just falls down and breaks his legs. Once I was in a barn with steps in it and I accidentally ran off the edge of the stairs approximately 5 or 6 stairs high and broke my legs. That is where I draw the line. I feel like the fall needs to be more severe in order for leg breaking to occur.