ForgePatch/patches/minecraft/net/minecraft/world/WorldServerMulti.java.patch

--- a/net/minecraft/world/WorldServerMulti.java
+++ b/net/minecraft/world/WorldServerMulti.java
@@ -60,6 +60,7 @@
          this.field_72982_D.func_82566_a(this);
       }
 
+      this.initCapabilities();
       return this;
    }