Just got it fixed. This needed to be added in the front-page.php file on line 81 –
remove_action( 'genesis_sidebar', 'genesis_do_sidebar' );
You can either add that in manually, or you could swap out your front-page file, or you can replace the entire theme if you haven’t made any changes to the files.
I just added this in the latest update, which is now available for download.