That's odd. Could you try clearing your browser's cache and cookies, using a different browser or Incognito mode? Let us know if this helps clear things up.
Thanks for confirming. As a next step, please login to the account/device experiencing the issue and send a feedback report directly from YouTube: https://goo.gl/VjzRwm . You may not get a response back, we do review everything and use the details to investigate and fix issues.