Just updated to ver 4.6 of the plugin and noticed that the Pinterest button does not open in a new tab. Checked the Advanced settings and the box is checked for that. Unchecked the box and saved. Then checked it and saved, just to get it to rewrite. No joy. All other share buttons are opening in a new tab. I don't have another site that is not updated to ver 4.6 to check to see if this was the case before. But, am asking around for other folks to check.