Player Animation swapped in F5 mode

With the mods we have installed, we've noticed that when in F5 mode, the animations are swapped, and with certain armor, the players body will go invisible. When one player crouches or punches, the other will do the same, without them actually doing it. In first person it doesn't occur. It will occur with any other animations too. Here's a streamable link to see the glitch https://streamable.com/caqob4