YouTube側の問題で表示不具合が出ておりました。

Getting reports from around the 🌎 that some of you are having trouble with certain features across YouTube services (e.g. logging in, switching accounts & using the navigation bar) – we’re aware & working on a fix.

Sharing updates as we have them here → https://t.co/wOtEBLiWAC

— TeamYouTube (@TeamYouTube) April 12, 2022

参考URL
「YouTube」の一部機能に障害
TeamYouTube


なお、修正が完了した報告もYouTubeから発表されています。

Getting reports from around the 🌎 that some of you are having trouble with certain features across YouTube services (e.g. logging in, switching accounts & using the navigation bar) – we’re aware & working on a fix.

Sharing updates as we have them here → https://t.co/wOtEBLiWAC

— TeamYouTube (@TeamYouTube) April 12, 2022