papermc/Spigot-Server-Patches/0083-Workaround-for-setting-passengers-on-players.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Sun, 10 Apr 2016 03:23:32 -0500
Subject: [PATCH] Workaround for setting passengers on players

SPIGOT-1915 & GH-114

diff --git a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
index 35c6c4871f21157fe349e87cb8fd0d5ab77a8c2a..c1205594a8da1a28ac9ee30d1d70f1011f0a2327 100644
--- a/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
+++ b/src/main/java/org/bukkit/craftbukkit/entity/CraftPlayer.java
@@ -791,6 +791,17 @@ public class CraftPlayer extends CraftHumanEntity implements Player {
         return true;
     }
 
+    // Paper start - Ugly workaround for SPIGOT-1915 & GH-114
+    @Override
+    public boolean setPassenger(org.bukkit.entity.Entity passenger) {
+        boolean wasSet = super.setPassenger(passenger);
+        if (wasSet) {
+            this.getHandle().playerConnection.sendPacket(new net.minecraft.server.PacketPlayOutMount(this.getHandle()));
+        }
+        return wasSet;
+    }
+    // Paper end
+
     @Override
     public void setSneaking(boolean sneak) {
         getHandle().setSneaking(sneak);