So, on SB (Not sure about other servers), but certain mobs can stack, and I admit this is a great plugin, however i've noticed a few cons with it. In mob farms after only 1 of them when stacked takes damage from fall damage, so basically difficult to even make a normal grinder They can glitch out of the mob farm when they do stack They do not stack very properly as many are still unstacked, and clutter everywhere. They also despawn when you get them to around x5, which is quite annoying.