Line break added in wp_editor code

Unlinke most wp_editor related questions, thsi doesn’t have to do with the post content.

I am using a router to show a form on a page on the frontend. On this page, my function calls:

$settings = array(
 'wpautop' => true,
 'media_buttons' => false,
 'editor_class' => 'frontend',
 'textarea_rows' => 5,
 'tabindex' => 2,
);

wp_editor( stripslashes( $post->post_content ), 'cnpostcontent', $settings );

It works fine except that there is a
in between the two buttons to toggle Visual and Text:

<div id="wp-cnpostcontent-editor-tools" class="wp-editor-tools hide-if-no-js"><a id="cnpostcontent-html" class="wp-switch-editor switch-html" onclick="switchEditors.switchto(this);">Text</a><br>
<a id="cnpostcontent-tmce" class="wp-switch-editor switch-tmce" onclick="switchEditors.switchto(this);">Visual</a>
</div>

This causes the Visual button to jump down. I can use css to raise it up with a negative margin, but I have no idea why it’s doing this. I’m not hooking this into the_content filter.

Any thoughts would be appreciated.

Thanks.