@TeamYouTube Why does tag copy+pasting no longer with with the Youtube Studio beta? CTRL A+C has worked for YEARS and now it no longer does.
As YouTube Studio is growing, you can always tell us what features you'd like to see by tapping the 'Send Feedback' button: https://goo.gl/NLk7mU . We review all the feedback sent to us, but YT doesn't necessarily respond to everyone. This will help us prioritize the request.