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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Why would you do this? Put the auto generated thumbnails as an option don't just start messing with the viewer experience by changing the content provided to them. Custom thumbnails have a reason, especially for serial content.