That's odd, have you tried to uninstall and reinstall the previous YouTube update? Here's how you can disable these apps: https://goo.gl/2Lq1tx . Let us know if this helps.
@TeamYouTube Issue when you tap on Show more and press BACK button(button of phone, no app)
Can you please fix this? :Dpic.twitter.com/N9iHRjW77S
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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