diff --git a/packages/viewer/src/components/viewer/frame-limiter.tsx b/packages/viewer/src/components/viewer/frame-limiter.tsx
index 9fa59080..eb62cb9a 100644
--- a/packages/viewer/src/components/viewer/frame-limiter.tsx
+++ b/packages/viewer/src/components/viewer/frame-limiter.tsx
@@ -28,10 +28,31 @@ const FrameLimiter: React.FC<FrameLimiterProps> = ({ fps = 50 }) => {
     set({ frameloop: 'never' })
     raf = requestAnimationFrame(tick)
 
+    // Browsers throttle requestAnimationFrame when the tab is hidden, the
+    // window is unfocused, or the system marks the tab as occluded. With
+    // frameloop="never" rAF is the only render driver, so when it stalls the
+    // canvas freezes — Linux Firefox/Chrome and Zen show this as the viewer
+    // "turning off" between cursor interactions. Force one synchronous
+    // advance whenever the page resumes so the next visible frame matches the
+    // current scene state.
+    function kick() {
+      i += 1 / 1000
+      advance(i)
+    }
+    function onVisibilityChange() {
+      if (document.visibilityState === 'visible') kick()
+    }
+    document.addEventListener('visibilitychange', onVisibilityChange)
+    window.addEventListener('focus', kick)
+    window.addEventListener('pageshow', kick)
+
     return () => {
       if (raf) {
         cancelAnimationFrame(raf)
       }
+      document.removeEventListener('visibilitychange', onVisibilityChange)
+      window.removeEventListener('focus', kick)
+      window.removeEventListener('pageshow', kick)
       set({ frameloop: initFrameloop })
     }
   }, [fps, advance, set, initFrameloop])