Thanks for the report. Just to confirm, have you tried uninstalling the app updates, restart your device and reinstall the updates to see if that fixes the issue? Keep us posted.
Appreciate the info. Please send a feedback report directly from YouTube with these steps: https://goo.gl/WdI0BK . While every individual report may not get a direct response back, we do review everything and use the details to investigate and fix issues. Thanks!