That's odd. Try uninstalling and reinstalling the latest updates. Also, check if the device OS is updated to the latest version. Let us know if that makes any difference.
@TeamYouTube @YouTube Hi can u give advice please, when I'm watching YouTube videos since I updated your app when I scroll comment section it won't scroll it goes back to top of page so I can't go down page, all since I updated but all other sites are fine, any advice 
Thanks
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Hi yes thank you I did that and fingers crossed it seems to be working fine now, thank you

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