Override DPP Encoding

plugin.php

/**
 * NOTE:  Unencode > in DPP Freeform CSS
 *
 * @since    1.0.9
 */
function evermore_unencode_dpp_css( $safe_text, $text ) {

	if ( strpos( $safe_text, 'gt;' ) !== false && strpos( $safe_text, 'lt;' ) === false ) {

		$safe_text = $text;

	}

	return $safe_text;

}

add_filter( 'esc_textarea', 'evermore_unencode_dpp_css', 10, 2 );

/**
 * NOTE:  Unencode > in DPP Freeform CSS before saving to option
 *
 * @since    1.0.9
 */
function evermore_unencode_dpp_css_save( $value, $old_value ) {

	foreach ( $value as $thiskey => $thisvalue ) {

		if ( strpos( $thisvalue, 'gt;' ) !== false && strpos( $thisvalue, 'lt;' ) === false ) {

			$value[$thiskey] = str_replace(
				array(
					'>',
					'>'
				),
				'>',
				$thisvalue
			);

		}

	}

	return $value;

}

add_filter( 'pre_update_option_gppro-custom-css', 'evermore_unencode_dpp_css_save', 10, 2 );