Scratch frustration

Well, this seems a little frustrating.

Apparently, for an embed from Scratch in itch.io, the arrow keys aren't going to work.  Instead of moving the character up and down, the page actually scrolls up and down.  I wonder if there's a way to pair the embed with some Javascript code that prevents the default action from occuring...

But in any case, even with the scrolling, the embeded game doesn't seem to register the arrow keys.  Even if I go to fullscreen.  Huh