[Sanjip Shah]

@kcullinan When you select the blog page choosing the “Full Content Display” template from the blog Page Attributes for a page you don’t need to set the same page as the post page in the Settings->Readings. I think you have selected the same page as the post page in the Settings->Readings so you need to unset it there. Hope this will fix it.
About the facebook icon repeat issue, it may be conflict with some other plugins, so try disabling you active plugins one by one and see if this solves the issue.