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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Stop doing that, YouTuber put effort to make their own thumbnail. If you want this autogenerated thumbnails, just put an option there to choose if they want autogenerated thumbnails, this is great for beginners but not to all.