Thanks for reaching out. Just to confirm, are you using latest version of browser? Also, have you tried in incognito mode to see if that makes any difference? Keep us posted.
Appreciate your efforts. As a next step, for the right team to investigate, could you send feedback from the account/device experiencing the issue: https://yt.be/help/feedback ? While you may not get a direct response, we do review everything and use the details to fix issues.