@YouTube the mobile version of your app is refusing to load some videos but will play other videos just fine the videos that this issue is happening to play out normaly until a specific part of the video the gray bar will just stop and it wont load the rest of the video
That's odd. If you're on Android, uninstall the app updates > restart the device > reinstall & update the app. If you're on iOS, uninstall the app > restart the device > reinstall the app. Let us know if that fixes the issue.