Hi Rikard.
Here’s how is it for exemple on Firefox : https://ibb.co/205DCvTS
….And here’s how it should be : https://ibb.co/6JmFg6pV
As you can see, the color of the blue bar with section title has desapeared, same for the button’s color and borders.
And agin, it’s doing this only on this website. I have no problem so far with the other websites using Enfold.

Can you help me please ?
In advance, Thank you .

Sorry, I think wpengine support may have deactivated the temp login plugin when they were troubleshooting. It should be working now, but here’s an actual user just in case. They also said the max on the hosting is 512, so even if you up it to 1024 it limits it to 512. But I run a bunch of Enfold sites with them and never had a memory issue like this — we shouldn’t have to up it that high, right? Maybe you’re just trying to do that temporarily to troubleshoot? Regardless, it doesn’t sound like they can do that for us, but I can double-check if you want; lmk. Thanks again for sticking with this!

Thanks again, Ismael! Interesting — the temp login isn’t expired, but here’s another one in the PC, also good for a week. I spoke with wp engine support and they troubleshot for about a half hour but couldn’t solve it. They showed me how to look in the inspector > Network > trigger the error > click on the first admin-ajax.php > Response and note how there’s just a “1” (https://snipboard.io/RJ7US6.jpg) as opposed to the html that should show there — they suggested I pass that info on to you in hopes it might provide a clue. I also added another environment in the same account, to test a clean install of Enfold there, and there doesn’t seem to be an issue with that install; no errors on buttons, etc. / functioning normally, if that offers any clue / potential solution. Lmk if you have any other questions.

Hello Rikard, thans for your reply… I installed the WP SMTP plugin and now it works.
why didn’t it work before? I have created other sites with enfold and it has never happened…

Thanks

@Guenni007: That was exactly the problem, but thanks to your hint yesterday I was able to download the woff2 file from https://kriesi.at/documentation/enfold/wp-content/uploads/sites/22/2022/08/justice.zip.

@Ismael: Perhaps it would be a good idea to update the law demo. 😉

Thanks Ismael,

You said that you manually cleaned up the code, so when I added it to the live site, I was seeing the same issues as before.

I am now just testing the following, which appears to be working, but did break the nav builder when I first ran it, so filtered this so it would only work on pages and posts.

I will update as to if it works fully.

Thanks

/**
 * ============================================================================
 * POLYLANG + ENFOLD CUSTOM_CLASS ISSUE FIXES
 * ============================================================================
 * 
 * Problem: When Polylang duplicates/translates pages, it incorrectly converts
 * custom_class attributes into id="custom_class" or id="custom_class=" in HTML output.
 * 
 * Solution: Multiple filters at different points in the translation/save process
 * to catch and fix the issue wherever it occurs.
 */

/**
 * Solution 1: Fix content after Polylang processes it (Primary Fix)
 * This runs after Polylang has translated the content but before it's saved
 * 
 * CRITICAL FIX: Handles unclosed custom_class=' attributes that break Enfold's parser
 * IMPORTANT: Excludes nav_menu_item to prevent menu structure issues
 */
add_filter('pll_filter_translated_post', 'fix_polylang_custom_class_issue', 20, 4);
function fix_polylang_custom_class_issue($tr_post, $source_post, $target_language, $data) {
    if (!$tr_post instanceof WP_Post) {
        return $tr_post;
    }
    
    // Exclude menu items - they don't contain Enfold shortcodes
    if ($tr_post->post_type === 'nav_menu_item') {
        return $tr_post;
    }
    
    $content = $tr_post->post_content;
    $original_content = $content;
    
    // Fix 1: Remove malformed id="custom_class=" or id="custom_class" in HTML
    $content = preg_replace(
        '/\s+id=["\']custom_class(?:=["\'])?/i',
        '',
        $content
    );
    
    // Fix 2: Fix unclosed custom_class=' attributes (THE MAIN ISSUE)
    // Pattern: custom_class=' followed by space, closing bracket, or end of shortcode
    // Replace with custom_class='' (properly closed empty attribute)
    $before_fix2 = $content;
    $content = preg_replace(
        "/custom_class='(?=\s|'|])/i",
        "custom_class=''",
        $content
    );
    $fix2_count = substr_count($before_fix2, "custom_class='") - substr_count($content, "custom_class='");
    
    // Fix 3: Also handle custom_class=" (double quotes, unclosed)
    $before_fix3 = $content;
    $content = preg_replace(
        '/custom_class="(?=\s|"|])/i',
        'custom_class=""',
        $content
    );
    $fix3_count = substr_count($before_fix3, 'custom_class="') - substr_count($content, 'custom_class="');
    
    // Fix 4: Remove custom_class='' or custom_class="" if they appear as standalone (no value)
    // This cleans up empty attributes that might cause issues
    $before_fix4 = $content;
    $content = preg_replace(
        "/\s+custom_class=['\"]{2}/i",
        '',
        $content
    );
    $fix4_count = (substr_count($before_fix4, "custom_class=''") + substr_count($before_fix4, 'custom_class=""')) - 
                  (substr_count($content, "custom_class=''") + substr_count($content, 'custom_class=""'));
    
    // Fix 5: Fix in shortcode attributes - sometimes custom_class becomes id in shortcodes
    $before_fix5 = $content;
    $content = preg_replace(
        '/\[([a-z_]+)([^\]]*?)\s+id=["\']custom_class(?:=["\'])?([^\]]*?)\]/i',
        '[$1$2$3]',
        $content
    );
    $fix5_count = substr_count($before_fix5, 'id="custom_class') - substr_count($content, 'id="custom_class');
    
    // Debug logging (only if WP_DEBUG is enabled)
    if (defined('WP_DEBUG') && WP_DEBUG && $content !== $original_content) {
        error_log(sprintf(
            '[POLYLANG FIX] Post ID %d: Fixed %d unclosed custom_class=\' attributes, %d unclosed custom_class=", %d empty custom_class, %d id="custom_class" issues',
            $tr_post->ID,
            $fix2_count,
            $fix3_count,
            $fix4_count,
            $fix5_count
        ));
    }
    
    $tr_post->post_content = $content;
    return $tr_post;
}

/**
 * Solution 2: Clean content when post is saved (Backup Fix)
 * This catches the issue at save time as a safety net
 * 
 * CRITICAL: Fixes unclosed custom_class=' attributes
 * IMPORTANT: Excludes nav_menu_item to prevent menu structure issues
 */
add_filter('wp_insert_post_data', 'clean_custom_class_on_save', 10, 2);
function clean_custom_class_on_save($data, $postarr) {
    // Exclude menu items - they don't contain Enfold shortcodes and menu structure is in postmeta
    if (!isset($data['post_type']) || $data['post_type'] === 'nav_menu_item') {
        return $data;
    }
    
    if (!isset($data['post_content'])) {
        return $data;
    }
    
    $content = $data['post_content'];
    
    // Fix 1: Remove id="custom_class=" or id="custom_class" from content
    $content = preg_replace(
        '/\s+id=["\']custom_class(?:=["\'])?/i',
        '',
        $content
    );
    
    // Fix 2: Fix unclosed custom_class=' attributes
    $content = preg_replace(
        "/custom_class='(?=\s|'|])/i",
        "custom_class=''",
        $content
    );
    
    // Fix 3: Fix unclosed custom_class=" (double quotes)
    $content = preg_replace(
        '/custom_class="(?=\s|"|])/i',
        'custom_class=""',
        $content
    );
    
    // Fix 4: Remove empty custom_class='' or custom_class="" attributes
    $content = preg_replace(
        "/\s+custom_class=['\"]{2}/i",
        '',
        $content
    );
    
    $data['post_content'] = $content;
    return $data;
}

/**
 * Solution 3: Clean content right after Polylang duplication
 * This runs immediately after Polylang creates a sync post
 * 
 * CRITICAL: Fixes unclosed custom_class=' attributes that break Enfold
 * IMPORTANT: Excludes nav_menu_item to prevent menu structure issues
 */
add_action('pll_created_sync_post', 'clean_enfold_content_after_duplication', 5, 4);
function clean_enfold_content_after_duplication($post_id, $tr_id, $lang, $strategy) {
    $post = get_post($tr_id);
    if (!$post) {
        return;
    }
    
    // Exclude menu items - they don't contain Enfold shortcodes
    if ($post->post_type === 'nav_menu_item') {
        return;
    }
    
    $content = $post->post_content;
    $original = $content;
    
    // Fix 1: Remove malformed id="custom_class" issues
    $content = preg_replace('/\s+id=["\']custom_class(?:=["\'])?/i', '', $content);
    
    // Fix 2: Fix unclosed custom_class=' attributes (THE MAIN ISSUE)
    // Replace custom_class=' (unclosed) with custom_class='' (properly closed)
    $before_fix2 = $content;
    $content = preg_replace(
        "/custom_class='(?=\s|'|])/i",
        "custom_class=''",
        $content
    );
    $fix2_count = substr_count($before_fix2, "custom_class='") - substr_count($content, "custom_class='");
    
    // Fix 3: Fix unclosed custom_class=" (double quotes)
    $before_fix3 = $content;
    $content = preg_replace(
        '/custom_class="(?=\s|"|])/i',
        'custom_class=""',
        $content
    );
    $fix3_count = substr_count($before_fix3, 'custom_class="') - substr_count($content, 'custom_class="');
    
    // Fix 4: Remove empty custom_class='' or custom_class="" attributes entirely
    // Enfold doesn't need empty custom_class attributes
    $before_fix4 = $content;
    $content = preg_replace(
        "/\s+custom_class=['\"]{2}/i",
        '',
        $content
    );
    $fix4_count = (substr_count($before_fix4, "custom_class=''") + substr_count($before_fix4, 'custom_class=""')) - 
                  (substr_count($content, "custom_class=''") + substr_count($content, 'custom_class=""'));
    
    // Fix 5: Ensure custom_class attributes with values are properly formatted
    $content = preg_replace_callback(
        '/\[([a-z_]+)([^\]]*?)\s+custom_class=([^\s"\']+)([^\]]*?)\]/i',
        function($matches) {
            // Ensure custom_class has quotes if missing
            $value = trim($matches[3]);
            if (!preg_match('/^["\'].*["\']$/', $value)) {
                $value = '"' . esc_attr($value) . '"';
            }
            return '[' . $matches[1] . $matches[2] . ' custom_class=' . $value . $matches[4] . ']';
        },
        $content
    );
    
    // Debug logging (only if WP_DEBUG is enabled)
    if (defined('WP_DEBUG') && WP_DEBUG && $content !== $original) {
        error_log(sprintf(
            '[POLYLANG FIX] Post ID %d (from %d): Fixed %d unclosed custom_class=\', %d unclosed custom_class=", %d empty custom_class attributes',
            $tr_id,
            $post_id,
            $fix2_count,
            $fix3_count,
            $fix4_count
        ));
    }
    
    if ($content !== $original) {
        wp_update_post(array(
            'ID' => $tr_id,
            'post_content' => $content
        ));
    }
}

/**
 * Solution 4: Clean content on frontend display (Final Safety Net)
 * This ensures broken content doesn't display even if it got into the database
 */
add_filter('the_content', 'remove_custom_class_id_from_html', 999);
function remove_custom_class_id_from_html($content) {
    // Remove id="custom_class=" (malformed with extra equals)
    $content = preg_replace('/\s+id=["\']custom_class=["\']?/i', ' ', $content);
    
    // Remove id="custom_class" (literal value only)
    $content = preg_replace('/\s+id=["\']custom_class["\']/i', ' ', $content);
    
    return $content;
}