Don't call wpautop directly when trying to prepare content for transformation.

[rinatkhaziev]

Instead check whether wpautop is attached for 'the_content' and if it's not, add it. The reason for this is that we applied the_content filters already, and the shortcodes were rendered. Calling wpautop after shortcodes are rendered will mangle most of them, unless shortcode returns 1 line of code.

[everton-rosario]

@rinatkhaziev how are the reproducible steps for the problem you've pointed out?

[rinatkhaziev]

Hey @everton-rosario, sure thing, here's quick and dirty test

add_action( 'init', function() {
    $test_content = "
    About wpautop
    About wpautop2

    About wpautop3

    About wpautop4

    [test-sc]
        ";

    $filtered = apply_filters( 'the_content', $test_content ) ;
    var_dump( "input string: \n\n" . $test_content );
    var_dump( "Expected output: \n\n" . $filtered, "\n\n", "wpautop'd after shortcode \n\n" . wpautop( $filtered ) );
    exit;

});

add_shortcode( 'test-sc', function( $atts, $content ) {
    return "
    <script>

    console.log('autop');

    console.log('autop');

    console.log('autop');

    </script>
    ";
} );

and the output:

string 'input string: 


About wpautop
About wpautop2

About wpautop3

About wpautop4

[test-sc]
    ' (length=90)
string 'Expected output: 

<p>About wpautop<br />
About wpautop2</p>
<p>About wpautop3</p>
<p>About wpautop4</p>

<script>

console.log('autop');

console.log('autop');

console.log('autop');

</script>

' (length=197)
string '

' (length=2)
string 'wpautop'd after shortcode 

<p>About wpautop<br />
About wpautop2</p>
<p>About wpautop3</p>
<p>About wpautop4</p>
<p><script></p>
<p>console.log('autop');</p>
<p>console.log('autop');</p>
<p>console.log('autop');</p>
<p></script></p>
' (length=234)