Advanced Custom Fields wysiwyg Toolbar Buttons Missing

If you notice that a site has Advanced Custom Fields wysiwyg toolbar buttons missing, it is likely because the Basic toolbar is being displayed rather than the Full toolbar. I was able to fix that issue and get them to show the Full toolbar by implementing the filter below.

/**
 * Remove the Basic toolbar so that the Full toolbar appears in ACF wysiwyg fields.
 *
 * @since  0.1.0
 * @author Kellen Mace
 * @param  array $toolbars The toolbars.
 * @return array $toolbars The toolbars, with the Basic toolbar removed.
 */
public function remove_acf_wysiwyg_basic_toolbar( $toolbars ) {

	if ( isset( $toolbars['Basic'] ) && isset( $toolbars['Full'] ) ) {
		unset( $toolbars['Basic'] );
	}

	return $toolbars;
}
add_filter( 'acf/fields/wysiwyg/toolbars', 'km_remove_acf_wysiwyg_basic_toolbar' );

This function removes the Basic toolbar from the array of available toolbars available to ACF wysiwyg fields, so the remaining Full toolbar is used instead. Here’s a before and after screenshot illustrating what it does: