Is it by purpose that those parts did fell out of sitemap.theme.inc?
/**
* Preprocesses the rendered tree for theme_sitemap_menu_tree().
*
* This is a clone of the core template_preprocess_menu_tree() function
* with the exception of the sitemap specific class name used in the
* UL that also allow themers to override the function only
* for the sitemap page.
*/
function template_preprocess_sitemap_menu_tree(&$variables) {
$variables['tree'] = $variables['tree']['#children'];
}And
function theme_sitemap_menu_tree(array $variables) {
return '<ul class="sitemap-menu">' . $variables['tree'] . '</ul>';
}we now have the following classes in the sitemap menue tree
<div>
<ul class="nav">
<li class="nav-item dropdown">
<a href="/test" class="nav-link dropdown-toggle" data-toggle="dropdown" data-drupal-link-system-path="node/17">test</a>
<div class="dropdown-menu">
<a href="/test/untertest" class="dropdown-item" data-drupal-link-system-path="node/18">untertest</a>
</div>
</li>
</ul>
</div>
which, at firsthand comes out as a complete mess.
Don't know wether this nav-item class is used somewhere else on the site and styling it breaks it in other places.
A mention of that in the (not jet updated) Readme.txt would be great.
Closed: outdated
Miscellaneous
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
This sounds more like a support request than a bug report, so I'm updating the category.
(I'm cleaning up old issues as part of a big review of open issues for 🌱 [Plan] Stable 8.x-2.0 release Active : thank you for your patience with me)
I'm going to close this as "Outdated" because we dropped support for Drupal 9 in 🌱 Drop support for D9, D10.0, D10.1, D10.2 Active .