Security Zombie bug

I don’t know if this happens for everybody, but when i blow the torso off a security guard zombie and it is still alive it suddenly transforms into a torsoless SCIENTIST zombie. It is really weird, is this because the security crawler model hasn’t been added yet? This happens every single time I blow a security zombies torso off
THe image on the right is the security guard zombie test subject
then the image on the left is the same security zombie, but i just blew its torso off and it magically transformed into a scientist crawler.
Hope u guys can fix this


Founded in 2004, Leakfree.org became one of the first online communities dedicated to Valve’s Source engine development. It is more famously known for the formation of Black Mesa: Source under the 'Leakfree Modification Team' handle in September 2004.