Hi @georgedamian78,
Apologies for the delay in my response! The Automattic team are currently at our annual company retread, so it may take us a little bit longer to reply to questions over the next week.
Canard adds some underlying code to control the layout on posts with featured images using JavaScript. It’s this code that’s causing the issue with the sidebar.
In order to prevent the JavaScript from loading, you would need to create a child theme and add the following to the functions.php file:
function canard_child_dequeue_scripts() {
wp_dequeue_script( 'single-thumbnail' );
wp_deregister_script( 'single-thumbnail' );
}
add_action( 'wp_print_scripts', 'canard_child_dequeue_scripts' );
From there, copy/paste Canard’s content-single.php file to your child theme’s directory. Find and remove the following code from that file in order to stop featured images from being displayed on single posts:
<?php if ( has_post_thumbnail() && ( ! has_post_format() || has_post_format( 'image' ) || has_post_format( 'gallery' ) ) ) : ?>
<div class="post-thumbnail">
<?php the_post_thumbnail( 'canard-single-thumbnail' ); ?>
</div>
<?php endif; ?>
Let me know how that goes or if any extra questions come up.