Apologies if this has been covered or discussed. On my stock Nirvana Blog page, the Linkedin, Facebook, and Twitter icons are not displaying correctly. There’s a white square box in the center of the icons instead of the company’s symbol. These icons display correctly for me (in Chrome) when I open the post. I’m not sure how to troubleshoot this.
The sharing buttons are not part of the theme, they are added by Jetpack. This might provide some insight into what needs adjusted in Jetpack’s configuration: