fix: pause old video before switching to prevent stale timeupdate triggering wrong hotspot states

engine/core/Engine.ts

@@ -85,6 +85,9 @@ export class Engine {
       }
     })
 
+    const activeEl = this.videoManager.getActiveVideoElement()
+    activeEl?.pause()
+
     if (this.isInitialScene) {
       this.isInitialScene = false
       this.videoManager.playInitial(scene.videoUrl, preloadUrls)
@@ -276,13 +279,16 @@ export class Engine {
       (conds) => conds ? this.stateManager.evaluate(conds) : true
     )
 
-    this.videoManager.switchTo(scene.videoUrl, preloadUrls)
-
     this.videoManager.onEnd(() => {
       this.emit('videoEnd', scene)
       this.onVideoEnd(scene)
     })
 
+    const activeEl = this.videoManager.getActiveVideoElement()
+    activeEl?.pause()
+
+    this.videoManager.switchTo(scene.videoUrl, preloadUrls)
+
     this.currentScene = scene
     this.emit('sceneChange', scene)
   }