craftbukkit/nms-patches/net/minecraft/world/entity/monster/EntityEvoker.patch

--- a/net/minecraft/world/entity/monster/EntityEvoker.java
+++ b/net/minecraft/world/entity/monster/EntityEvoker.java
@@ -200,7 +200,7 @@
                         worldserver.getScoreboard().addPlayerToTeam(entityvex.getScoreboardName(), scoreboardteam);
                     }
 
-                    worldserver.addFreshEntityWithPassengers(entityvex);
+                    worldserver.addFreshEntityWithPassengers(entityvex, org.bukkit.event.entity.CreatureSpawnEvent.SpawnReason.SPELL); // CraftBukkit - Add SpawnReason
                     worldserver.gameEvent(GameEvent.ENTITY_PLACE, blockposition, GameEvent.a.of((Entity) EntityEvoker.this));
                 }
             }