(Ctrl + Enter) not working in New RWD

I noticed that option is only working to check code, but it is not possible to go on to the next step. Only with the mouse click.
I tried in Legacy RWD and it is working fine.

This is a known issue and is being addressed in pull request 46023.

After you get the correct answer the button should have focus so you can press the Space Bar. Just an FYI until the fix is pushed.

that is great! thank you