Don't show a player on map if they're vanished. Fixes BUKKIT-1882

src/main/java/org/bukkit/craftbukkit/map/CraftMapRenderer.java

@@ -3,6 +3,7 @@ package org.bukkit.craftbukkit.map;
 import net.minecraft.server.WorldMap;
 import net.minecraft.server.WorldMapDecoration;
 
+import org.bukkit.Bukkit;
 import org.bukkit.entity.Player;
 import org.bukkit.map.MapCanvas;
 import org.bukkit.map.MapCursorCollection;
@@ -32,8 +33,15 @@ public class CraftMapRenderer extends MapRenderer {
         while (cursors.size() > 0) {
             cursors.removeCursor(cursors.getCursor(0));
         }
-        for (Object object : worldMap.g.values()) {
-            WorldMapDecoration decoration = (WorldMapDecoration) object;
+
+        for (Object key : worldMap.g.keySet()) {
+            // If this cursor is for a player check visibility with vanish system
+            Player other = Bukkit.getPlayerExact((String) key);
+            if (other != null && !player.canSee(other)) {
+                continue;
+            }
+
+            WorldMapDecoration decoration = (WorldMapDecoration) worldMap.g.get(key);
             cursors.addCursor(decoration.locX, decoration.locY, (byte) (decoration.rotation & 15), (byte) (decoration.type));
         }
     }