diff --git a/src/components/three/ModelViewer.tsx b/src/components/three/ModelViewer.tsx
index ff58083..501f71f 100644
--- a/src/components/three/ModelViewer.tsx
+++ b/src/components/three/ModelViewer.tsx
@@ -767,12 +767,14 @@ function VisibilityApplier() {
       // For each ifcElement descendant inside this model root
       root.traverse((el) => {
         if (!el.userData?.ifcElement) return;
+        touched++;
         const key = elementKey(modelId, el);
         const hidden = hiddenElementKeys.has(key);
         const isolated = isolatedElementKeys ? !isolatedElementKeys.has(key) : false;
         el.visible = !(hidden || isolated);
 
         const selected = selectedElementKeys.has(key);
+        if (selected) highlighted++;
         el.traverse((m) => {
           if (!(m instanceof THREE.Mesh)) return;
           const mats = Array.isArray(m.material) ? m.material : [m.material];
@@ -796,6 +798,7 @@ function VisibilityApplier() {
         });
       });
     });
+    console.log('[VisibilityApplier] ran', { touched, highlighted, selectedKeys: Array.from(selectedElementKeys) });
   }, [scene, nonce, models, opacity, renderMode, checklist]);
 
   return null;