Breadcrumb separator spacing issue

Created by: heruan

In v4.0.0-alpha the breadcrumb separator spacing behaves differently when subsequent <li>s are separated by whitespace or not in the markup source.

<ol class="breadcrumb">
    <li><a href="#">Home</a></li>
    <li><a href="#">Page</a></li>
</ol>
<ol class="breadcrumb">
    <li><a href="#">Home</a></li><li><a href="#">Page</a></li>
</ol>

produces:

See http://jsfiddle.net/heruan/0zpqt5kw/