YouTube API scripting all black

Hello, I:

1. Opened YouTube API example;

2. Started preview;

3. Can see video, all works;

4. I created in this exampe file new Layout;

5. Started preview - all black, no errors.

I need this feature, but I not understand what is wrong, because I did nothing, just created new Layout...

Thanks

If you want, I have a demo on how to use YouTube with construct 3

github:

https://c3demo.stranianelli.com/javascript/007-youtube/

https://github.com/el3um4s/construct-demo

patreon:

https://www.patreon.com/posts/46901116