Fix ListenerList not firing when parent has a listener before child i…

…s created.
MinecraftForge · Jan 29, 2025 · bb81df7 · bb81df7
1 parent 49c8162
commit bb81df7
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/main/java/net/minecraftforge/eventbus/ListenerList.java b/src/main/java/net/minecraftforge/eventbus/ListenerList.java
@@ -121,6 +121,10 @@ private ListenerListInst() {}
         private ListenerListInst(ListenerListInst parent) {
             this.parent = parent;
             this.parent.addChild(this);
+            // We set the NO_LISTENERS so we don't have to rebuild the listener list if nobody registers
+            // However the parent can have a listener registered before we know about the sub-class
+            if (this.parent.listeners != NO_LISTENERS)
+                this.listeners = null;
         }
 
         public void dispose() {