Force playback after app visibility changes back to visible (#1106)

* Force playback after app visibility changes back to visible

* Create lemon-horses-cover.md

* remove debug logs

.changeset/lemon-horses-cover.md

@@ -0,0 +1,5 @@
+---
+"livekit-client": minor
+---
+
+Force playback after app visibility changes back to visible

src/room/track/Track.ts

@@ -301,6 +301,17 @@ export abstract class Track<
 
   protected async handleAppVisibilityChanged() {
     this.isInBackground = document.visibilityState === 'hidden';
+    if (!this.isInBackground && this.kind === Track.Kind.Video) {
+      setTimeout(
+        () =>
+          this.attachedElements.forEach((el) =>
+            el.play().catch(() => {
+              /** catch clause necessary for Safari */
+            }),
+          ),
+        0,
+      );
+    }
   }
 
   protected addAppVisibilityListener() {