Minecraft wiki entry for Patrol, associated text: A patrol spawned by a player might not function properly, instead causing some of the patrol members to wander around. One of the ways to fix this is to reduce the size of the patrol to around 5 members. Another way is to make the captain move, as the rest of the patrol members can move along with it and follow it around. Witches might not function properly in a patrol because the witch is not an illager.