Bug in Articles Addon: truncateHtml() outputs invalid closing tags, causing double line breaks

Hi team,

I found a bug in the Articles addon (components/com_sppagebuilder/addons/articles/site.php) where void elements like <br /> inside an article's introtext end up duplicated in the rendered HTML output.

Issue Description
When an article contains a single line break in the intro text (e.g., <p><strong>Title</strong><br />Venue: Details...</p>), the Articles addon displays it with an extra empty line break:

HTML <div class="sppb-article-introtext"><strong>Title</strong><br><br>Venue: Details...</div>
Cause
In site.php, the DOM traversal function traverseNodes() treats all XML_ELEMENT_NODE elements equally without checking if an element is a self-closing/void tag.

For <br>, it runs:

PHP $content .= '<' . $child->nodeName . '>'; $this->traverseNodes($child, $content, $charCount, $limit); $content .= '</' . $child->nodeName . '>';

This generates <br></br>. Because </br> is invalid HTML syntax, modern web browsers automatically parse the closing </br> as a second <br> tag, causing unwanted double spacing.

Proposed Solution
Maintain a list of standard HTML void elements (<br>, <img>, <hr>, etc.) so they do not receive closing tags or recursive child processing.

Update traverseNodes() in site.php to:

`
PHP
function traverseNodes($node, &$content, &$charCount, $limit) {
$voidTags = ['br', 'hr', 'img', 'input', 'link', 'meta', 'area', 'base', 'col', 'embed', 'param', 'source', 'track', 'wbr'];

foreach ($node->childNodes as $child) {
    if ($child->nodeType == XML_TEXT_NODE) {
        $text = $child->textContent;
        $remainingChars = $limit - $charCount;

        if (mb_strlen($text) <= $remainingChars) {
            $content .= htmlspecialchars($text);
            $charCount += mb_strlen($text);
        } else {
            $content .= htmlspecialchars(mb_substr($text, 0, $remainingChars)) . '...';
            $charCount = $limit;
            return;
        }
    } elseif ($child->nodeType == XML_ELEMENT_NODE) {
        $tag = strtolower($child->nodeName);

        $content .= '<' . $child->nodeName;
        if ($child->hasAttributes()) {
            foreach ($child->attributes as $attr) {
                $content .= ' ' . $attr->nodeName . '="' . htmlspecialchars($attr->nodeValue) . '"';
            }
        }

        if (in_array($tag, $voidTags)) {
            $content .= '>';
            continue;
        }

        $content .= '>';

        $this->traverseNodes($child, $content, $charCount, $limit);

        $content .= '</' . $child->nodeName . '>';
        if ($charCount >= $limit) return;
    }
}

}
`
Could you please review and consider including this fix in the next SP Page Builder update?

Thank you!