wp_editor() with shortcode

I am playing around with shortcodes and how to display HTML in the front end .
Consider , I have a form like below :

<form>
    <div class="form-group">
        <label>Title</label>
        <input type="text" class="form-control" id="r_inputTitle">
    </div>
    <div class="form-group">
        <label>Content</label>
        <textarea class="form-control" id="recipecontenteditor"></textarea>
    </div>
    <div class="form-group">
        <button type="submit" class="btn btn-primary">Submit Recipe</button>
    </div>
</form>

I want to display it in the front end on a shortcode . This is how I do it . In
my index.php :

add_shortcode( 'recipe_creator', 'r_recipe_creator_shortcode' );

In creator.php ( which has the shortcode callback ) I have :

function r_recipe_creator_shortcode(){
  $creatorHTML          = file_get_contents( 'creator-template1.php', true )
  return $creatorHTML;
}

This shows the form correctly .

Now suppose from inside the r_recipe_creator_shortcode() function I call another
function which just stores in the buffer and return the TinyMCE editor code like
below :

<?php

function r_recipe_creator_shortcode(){
  $creatorHTML          = file_get_contents( 'creator-template1.php', true );
  $editorHTML           = r_generate_content_editor();
  return $creatorHTML;
}

function r_generate_content_editor(){
  ob_start();
  wp_editor( '', 'recipecontenteditor' );
  $editor_contents      = ob_get_clean();
 //var_dump($editor_contents);
  return $editor_contents;
}

On doing this I found out the following div to be inserted after
<label>Content</label> and before <textarea class=”form-control” id=”recipecontenteditor”></textarea> .

<div id="qt_recipecontenteditor_toolbar" class="quicktags-toolbar">

This is a screenshot of how it looks like : Screenshot 1

I understand ob_start() wont output wp_editor() instead output is stored in
$editor_contents which is being returned to $editorHTML . I am curious how this
div is inserted in the HTML though I am not doing anything with the $editorHTML
variable but just returning $creatorHTML from the shortcode callback .

Investigating further I found out if I var_dump $editor_contents ( which should
have the complete code for wp_editor()) , the div , <div
id=”qt_recipecontenteditor_toolbar” class=”quicktags-toolbar”> [ in green ] is in
there but some divs along with the style are missing [in red] in the output . Screenshot :
Screenshot 2

Could some body please tell me a) how the div with id=”qt_recipecontenteditor_toolbar” is getting inserted ? b) why only the div with id=”qt_recipecontenteditor_toolbar” is getting inserted and not the complete HTML for wp_editor() ?