@TeamYouTube in my subscription feed it no longer displays the channel name. Put it back. @TypicalGamer happens to be the example. This is an iPhone 8 with iOS 12.1.pic.twitter.com/APhis2nqUv
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I don't have multiple browsers because that's the YouTube app, don't have multiple devices because I don't own more than one phone. And uninstalling and reinstalling didn't work. I'll update to iOS 12.1.1 tonight but I really doubt that's going to fix the YouTube app.