Grid System: whitespace in class name

Output looks like this:

<div class="row">
	<div class=" col-sm-4">
		Content
	</div>
	<div class=" col-sm-8">
		Content
	</div>
</div>

This causes selecors like [class^="col-"] to stop working. Haven’t tested the other modules.

https://wordpress.org/plugins/bootstrap-3-shortcodes/