TheoryTabs copied to Hookpad - disable YouTube playback?

My students have been playing around with TheoryTabs, copying them into Hookpad and changing things around to see how they sound. The issue is that no matter what they do, the playback is always the YouTube playback. I’m not seeing what I used to see, which is a button that allows piano playback instead of YouTube. Is this an intentional change?

Did I explain the issue well?

ANOTHER “NEVER MIND!” I just found out how to disable the YouTube video attachment in the Preferences. Sorry!

Nice! Also clicking “Hide” on the YouTube window at the bottom (right side), slides it out of view.