Hi Paul,
It seems like a front-end bug to me, we will try to fix it in the next release.
For now, can you try this filter?
add_filter( 'generateblocks_query_loop_args', function( $query_args ) {
if ( isset( $query_args['orderby'] ) && 'slug' === $query_args['orderby'] ) {
$query_args['orderby'] = 'name';
}
return $query_args;
} );
You can add it to a plugin called code snippet, or if you are using a child theme, add it to the child theme’s functions.php
.
Let me know!