diff --git a/src/pages/XRSession.tsx b/src/pages/XRSession.tsx
index 3ffb5f8..f612423 100644
--- a/src/pages/XRSession.tsx
+++ b/src/pages/XRSession.tsx
@@ -533,14 +533,15 @@ const XRSession = () => {
 
             {effectiveInXR ? (
               <>
-                {/* In XR (or SimXR): grab wrapper → model. Skip hit-test in SimXR mode. */}
+                {/* In XR (or SimXR): grab wrapper → ACTIVE model. Other models render as static background. */}
+                <XRBackgroundModels />
                 {simXR ? (
                   <group position={[0, 1.0, -1.2]}>
                     <XRGrabbable
                       allowScale={allowScale}
                       onGrabStart={() => { if (placementMode) setPlacementMode(false); }}
                     >
-                      <XRModel url={model.url} />
+                      <XRActiveModel />
                     </XRGrabbable>
                   </group>
                 ) : (
@@ -556,7 +557,7 @@ const XRSession = () => {
                       allowScale={allowScale}
                       onGrabStart={() => { if (placementMode) setPlacementMode(false); }}
                     >
-                      <XRModel url={model.url} />
+                      <XRActiveModel />
                     </XRGrabbable>
                   </XRHitTestPlacement>
                 )}
@@ -580,9 +581,10 @@ const XRSession = () => {
               </>
             ) : (
               <>
-                {/* Desktop preview (no headset): show model with OrbitControls */}
+                {/* Desktop preview (no headset): show all models with OrbitControls */}
                 <group position={[0, 0, 0]}>
-                  <XRModel url={model.url} />
+                  <XRBackgroundModels />
+                  <XRActiveModel />
                 </group>
                 <XRMeasurementOverlay />
                 <OrbitControls