As you can see comments for article dont work. Send button dont do anything.
Im using regular labs tabs wich are loading joomla article module and therefor there are comments for every tab.
Unfortunately ccomment only works on native com_content and not with the tabs extension you use. CComment is actually looking at the URL to figure out the id of the article you are commenting on. Since you are loading the articles through ajax ccomment is not properly initialized and it is missing some parts for it to work properly.
There is nothing we can do here.