Upgrading PHP 7.4 to PHP 8.1 there is an issue using ColorMag Child Theme

We are using ColorMag (free version) for a site.
We are using a ColorMag Child Theme with minimal functionality.

We upgraded from PHP 7.4 to PHP 8.1
Everything works fine. But there is a liltle but strange difference:

The <div class=”featured-image”> disapeared in the produced source code, delivered to browser.
We doubled checked this surprising behavior in backend with “live preview” (from German “Live Vorschau” – hope the tranlation is correct):
On a page for single article the featured picture is present with PHP 7.4, but will not shown with PHP 8.1
As describe above: the html source produced with 8.1 simply does not include a the corresponding html-div-tag like
<div class=”featured-image”>

</div>
which was always be there with PHP 7.4

This issue can’t reproduce in a “normal” ColorMag Theme (without child): here is everything fine!

Any hint or help would be great!

• This topic was modified 4 years ago by vomschloss.
• This topic was modified 4 years ago by vomschloss.
• This topic was modified 4 years ago by vomschloss.