how to display wp_editor in a page

I think, there is a lack of wp_autop() and other formatting functions that get applied to the the_content filter. The editor does not save <p> tags at all, but later on line-breaks are converted into paragraphs by wp_autop().

I would like to say about meta content, for that like to recreate the default filters. I do this because some plugins add things by the the_content filter.

There is some filters like below:-

add_filter( 'meta_content', 'wptexturize' );
add_filter( 'meta_content', 'convert_smilies' );
add_filter( 'meta_content', 'convert_chars' );
add_filter( 'meta_content', 'wpautop' );
add_filter( 'meta_content', 'shortcode_unautop' );
add_filter( 'meta_content', 'prepend_attachment');
add_filter( 'meta_content', 'do_shortcode' );

Place the below code where you want to display your actual data.

$your_description = get_post_meta($post->ID, 'meta_name', true);
echo apply_filters( 'meta_content', $your_description );