When we are listing videos with YouTube from a playlist (with playlistItems service), the service should return us the following value : items.status.privacyStatus, if the status is equals to private, the metadatas of the video are not availables (title, thumnail, etc.) and the video should not be listed.

But it seems that this metadata is not well returned by the YouTube API despite of its description in the documentation of the service : https://developers.google.com/youtube/v3/docs/playlistItems#status.privacyStatus