Theme issue with Archives plugin?

[paulhibbitts]

I've been trying to track down why the Archives Plugin is not working for an inherited Bootstrap theme, and it looks like the theme itself (Bootstrap) might be the issue. A continuous list of months is always displayed, and not just the months containing posts.

This issue can actually be seen on the getgrav.org hosted theme demo site:
http://demo.getgrav.org/bootstrap-skeleton/

As compared with the same content using Antimatter theme:
http://demo.getgrav.org/blog-skeleton

I've tried to figure out the issue myself, but no luck - might this be looked at?

Thanks very much,
Paul