Hi Dorian,
Which widget are you using? The default category widget?
I did a quick search and found this function:
// prevent the category widget from using the category description as the list item title attribute
function sjc_disable_cat_desc_widget_list_titles ( $cat_args ) {
$cat_args[ 'use_desc_for_title' ] = 0;
return $cat_args;
}
add_filter( 'widget_categories_args', 'sjc_disable_cat_desc_widget_list_titles' );
Adding PHP: https://generatepress.com/knowledgebase/adding-php-functions/
Let me know ๐