thanks Joe, with your input i managed to insert the function into functions.php and get the desired output, with a twentytwelve-styled footer:
function custom_post_block( $block, $excerpt, $args, $permalink=false ) {
echo '<article id="post-'.get_the_id().'" class="post type-post status-publish format-standard">';
if( $args['thumb_size'] != 'none' ) {
echo '<a href="'.get_permalink().'">'.get_the_post_thumbnail( get_the_id(), 'opening-thumb' ).'</a>';
}
echo '<h3><a href="'.get_permalink().'">'.get_the_title().'</a></h3>';
echo '<div class="entry-summary"><p>'.get_the_excerpt().'</p></div>';
echo'<footer class="entry-meta">';
//comments
echo '<span class="comments-link"><a title="Commenti a '.get_the_title().'" href="'.get_permalink().'/#comments">'.get_comments_number( get_the_id() ).'</a></span> | ';
//postdate
echo '<span class="meta-date"><a rel="bookmark" title="'.get_the_time( 'H:i', get_the_id() ).'" href="'.get_permalink().'"><time datetime="'.get_the_time( 'Y-m-d', get_the_id() ).'T'.get_the_time( 'H:i+00:00', get_the_id() ).'" class="entry-date">'.get_the_time( 'd/m/Y', get_the_id() ).'</time></a></span> | ';
// categories
$catslist = get_the_category_list(', ' , get_the_id() );
echo '<span class="meta-cats">'.$catslist.'</span>';
echo '</footer>';
echo '</article>';
}
add_filter( 'mtphr_post_post_block', 'custom_post_block', 10, 3 );
i suspect this will format all mtphr_post_post_blocks in this fashion, so it’d be good to know if there was a way to differ from mtphr_post_post_block to mtphr_post_post_block (hence my request for custom templates), but for the scope i needed it, it does the job just fine!
with regards to the original question of this post, have you found a solution to the strange behavior of content in tabs?
eventually tabs do work fine, but it seems like content is dropped into tabs from the sky ??