$featured_image= wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'thumbnail' );
<?php echo get_the_post_thumbnail( $post_id, $size, $attr ); ?>
OK. Let's consider the code for pulling the featured image. From the class-xenword-thread-creation.php file:
Code:$featured_image= wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'thumbnail' );
This would need to be changed to include $size or $attr.
https://codex.wordpress.org/Function_Reference/get_the_post_thumbnail
Code:<?php echo get_the_post_thumbnail( $post_id, $size, $attr ); ?>
$featured_image= wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'large' );
Could the suggestion of STEF be integrated? This is one of the most needed issue for me for Xenword, because at the moment I have to manually replace every time the 150x150 image in xf thread with full size image link of wordpress.