Let me put the workaround here for others to use for the meantime.
1. Create an admin.css and enqueue it in functions.php
function admin_style() {
wp_enqueue_style('admin-styles', get_template_directory_uri().'/admin.css');
}
add_action('admin_enqueue_scripts', 'admin_style');
2. Add this to the admin.css:
body .wpt-form-item {
display: block !important;
}