This plugin enabled breaks text editor

We’re not aware of this issue and can not replicate it. The plugin does not have specific functionality to minimize code either.

It’s happening to me too. I narrowed down 32 plugins to this one.
Naturally it was the last one, seeing as the name begins with a “Y”.
..had to laugh.

Could it be any of these?

class-install-deactivate.php

public function tinymce_fix($init) {
	$init['wpautop'] = false;
	return $init;
}

wysiwyg.php

static function value( $new, $old, $post_id, $field )	{
	if($field['raw']) {
		$meta = $new;
	} else if( $field['clone'] ) {
		$meta = array_map( 'wpautop', $new );
	} else {
		$meta = wpautop( $new );
	}
	return $meta;
}

Thanks for reporting the issue.

I think wpautop was introduced to minimize white space when the text is saved with a hope that it will improve page loads. It looks like it messed up the readability of HTML in text mode. We will remove it in the next release.