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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The video by @MKBHD completely explains how I feel about all the tests done by YouTube. There should be an option to opt in and out. At least glad that it's been announced though so that's a step in the right direction.