Update EventBus to address concurrency issue in ModLauncher Factory. Closes #8924

src/main/java/net/minecraftforge/common/MinecraftForge.java

@@ -26,7 +26,7 @@ public class MinecraftForge
      * ORE_GEN_BUS for ore gen events
      * EVENT_BUS for everything else
      */
-    public static final IEventBus EVENT_BUS = BusBuilder.builder().startShutdown().build();
+    public static final IEventBus EVENT_BUS = BusBuilder.builder().startShutdown().useModLauncher().build();
 
     static final ForgeInternalHandler INTERNAL_HANDLER = new ForgeInternalHandler();
     private static final Logger LOGGER = LogManager.getLogger();

src/main/java/net/minecraftforge/common/world/PieceBeardifierModifier.java

@@ -1,3 +1,8 @@
+/*
+ * Copyright (c) Forge Development LLC and contributors
+ * SPDX-License-Identifier: LGPL-2.1-only
+ */
+
 package net.minecraftforge.common.world;
 
 import net.minecraft.world.level.levelgen.structure.BoundingBox;

src/main/java/net/minecraftforge/network/NetworkInstance.java

@@ -36,7 +36,7 @@ public class NetworkInstance
         this.networkProtocolVersion = networkProtocolVersion.get();
         this.clientAcceptedVersions = clientAcceptedVersions;
         this.serverAcceptedVersions = serverAcceptedVersions;
-        this.networkEventBus = BusBuilder.builder().setExceptionHandler(this::handleError).build();
+        this.networkEventBus = BusBuilder.builder().setExceptionHandler(this::handleError).useModLauncher().build();
     }
 
     private void handleError(IEventBus iEventBus, Event event, IEventListener[] iEventListeners, int i, Throwable throwable)