@TeamYouTube help my mobile youtube is messed up, every time an unskippable ad plays it just doesn't end and goes into the minuses (bottom right)pic.twitter.com/sBojq0SuAV
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Oh! That's weird – it even went -36s. Does this happen on PC too? Also, have you checked for an update or reinstalled the app? Try these things and let us know if it helps.