When going up stairs, and jumping while going up them, you can go flying, from the result of this. It allows you to fly up the stairs really fast, and potentially fall of the railing and die, if there is one.
It seems to happen with any upward slope too, ramps, upward hills, rocks, and stairs.
This along with being able to sprint jump while injured needs to be fixed. Very easy way to bypass injury consequences, and jump around like it's CSGO or Fortnite (not belong in DayZ).
Also, you're still able to jump a few times even after your stamina bar being fully depleted, even on vanilla servers.