Hello @TeamYouTube , I would like to know, why are not the thumbnails of the videos on my channel? What happens is that all my videos had thumbnails, and now they are no longer seen.pic.twitter.com/10DKNkIopT
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I don't think it would be too hard to just post a tweet/put a notification on YouTube when you do something like this. Means people won't get caught out wondering why this or that is not working. They'll know ahead of time