f

adapters/neoforge/src/main/java/art/arcane/iris/neoforge/NeoForgeModdedLoader.java

@@ -53,6 +53,11 @@ public final class NeoForgeModdedLoader implements ModdedLoader {
         return ServerLifecycleHooks.getCurrentServer();
     }
 
+    @Override
+    public void invalidateLevelCache(MinecraftServer server) {
+        server.markWorldsDirty();
+    }
+
     @Override
     public boolean clientEnvironment() {
         return FMLEnvironment.getDist().isClient();