New bugs

1. This new version for iPad stopped recognizing that I pass new videos (its symbol remains white, not even light blue). And the only way to make the app recognize its completion is to manually shut down the app and launch it again. Each time I finish a video and return to the course menu, I am confused which video I should watch next.
2. When you start watching a video (not an excercise or just reading page) and return to the course menu before it ends, the audio continues, and if you launch this same video again, you can hear two audio tracks at the same time.

АлександR about Khan Academy, v4.0.0