Fix marker scale

Author: Big-Iron-Cheems

src/main/java/com/example/addon/modules/ModuleExample.java

@@ -48,13 +48,13 @@ public ModuleExample() {
 
     /**
      * Example event handling method.
-     * Requires {@link AddonTemplate#getPackage()} to be setup correctly, will fail silently otherwise.
+     * Requires {@link AddonTemplate#getPackage()} to be setup correctly, otherwise the game will crash whenever the module is enabled.
      */
     @EventHandler
     private void onRender3d(Render3DEvent event) {
         // Create & stretch the marker object
         Box marker = new Box(BlockPos.ORIGIN);
-        marker.stretch(
+        marker = marker.stretch(
             scale.get() * marker.getLengthX(),
             scale.get() * marker.getLengthY(),
             scale.get() * marker.getLengthZ()