We all know that Google Webmaster Tools displays an image sequel of your website’s homepage presenting as dashboard listing view of your site profiles in Google Webmaster Tools.
But think what if the image preview of your site is wrong as Google Webmaster Tools shows. Well you have to think about this. But you need to worry at all; Google’s John Mueller says it’s not really concerned issue to be think about this.
Below you can see the comment as John Mueller said
Actually this kind of image preview of the site doesn’t mean anything relevance to site’s rankings and indexing it’s like a style matter for Webmaster Tools.