WordPress: filter for the_content to remove excess tags around shortcodes

wp-filter-shortcode-content.php

<?php
// get rid of junk <p> and <br> tags TinyMCE inserts around shortcodes
add_filter( 'the_content', function ( $content ) {   
	$array = [
		'<p>[' => '[', 
		']</p>' => ']', 
		']<br />' => ']',
		']<br>' => ']',
		'<p>&nbsp;</p>' => '',
	];
	$content = strtr( $content, $array );
	return $content;
});

see also https://gist.github.com/donnamcmaster/b634ac4a7ebec6b3814b75d243ed23fd for processing shortcodes outside the loop