Per JonathanTheBlack's discovery, it appears as though spaces are lacking between the "»" and the page name following it. This can be seen on this page where I have exaggerated word spacing to make the lack of that space obvious.

I mark this as a bug since it appears that in time's past, breadcrumbs did use to have that space evidenced by the following image taken sometime in 2011 or so:

Old Breadcrumbs

Currently, CSS has the power to add a padding between links and the "»", but it cannot add padding between the final page name and that symbol since the final page name is not surrounded by any kind of tag (like a span).