I use Omeka 2.6 and I have just installed the Omeka-Bootstrap-Themes. The theme functions without a problem and looks wonderful (thanks for all the effort!) if some additional plugins are not activated. When, for example, Commenting is activated, the layout on the “items/show/xx” page is totally broken.
When I add <?php CommentingPlugin::showComments(); ?> to the bottom of the items/show.php file, I naturally get two comment forms.
The same problem is true for some other plugins as well (Embed Codes and Social Bookmarking).