I note from your screenshot that you're logged in, but there's no quick thread. Is that because the user has no permission to post in that forum (as is the case in my screenshot) or is it because you've modified the template to remove that? If the latter, have you unintentionally removed something else?
I've indeed modified the "forum_view" template to remove the "quick_thread" macro. This macro pulls in "structured_list.less" which is required for the padding. Thanks.