wp_kses doesn’t work

Hello, I’m building a plugin that features a textarea where the user can insert a snippet of code (for example Adsense code). When I try to sanitize the input using wp_kses and the Jetpack plugin is enabled, the snippet code is shuffled. If Jetpack is disabled then my plugin works fine. Here is my php code for ensuring strings are safe to use when WordPress calls the function that sanitizes the option’s value.

// List of allowed tags and attributes 
		add_filter( 'safe_style_css', function( $styles ) {
			$styles[] = 'display';
			return $styles;
		} );
		$allow_html = array (
			'a' => array (
				'href' => array(),
			),
			'center' => true,
			'img' => array (
				'src' => array(),
				'alt' => array(),
				'style' => array()
			),
			'ins' => array( 
				'class' => array(),
				'style' => array ( 'display'=>array(), 'width'=>array(), 'height'=>array() ), 
				'data-ad-client' => array(),
				'data-ad-slot' => array() ),
			'noscript' => array(),
			'script' => array (
				'async' => array(),
				'src' => array() ),
		);
		
		$sane['script'] = mb_strimwidth( wp_kses( $input['script'], $allow_html ), 0, 511 );

If I remove wp_kses function call from the line of code above with

$sane['script'] = mb_strimwidth( $input['script'], 0, 511 );

then my plugin works fine with Jetpack too. Where is the problem?