New Update and editor buttons filter stopt working with WP4.8

Hi SiteOrigin,

in so-widget-bundle > base > inc > fields > tinymce.class.php

if ( ! empty( $this->wp_version_lt_4_8 ) ) {
			add_filter( 'mce_buttons', array( $this, 'mce_buttons_filter' ), 10, 2 );
			add_filter( 'quicktags_settings', array( $this, 'quicktags_settings' ), 10, 2 );
			if ( ! empty( $this->button_filters ) ) {
				foreach ( $this->button_filters as $filter_name => $filter ) {
					$is_valid_filter = preg_match(
						'/mce_buttons(?:_[1-4])?|quicktags_settings/', $filter_name
					) && ! empty( $filter ) && is_callable( $filter );
					if ( $is_valid_filter ) {
						add_filter( $filter_name, array( $this, $filter_name ), 10, 2 );
					}
				}
			}
		}

What’s the point behind this change?
Is there a new way to filter buttons in WP >= 4.8?

Thanks for this great PlugIn!

Cheers Jan