Ghost generates a 256x256 px favicon, which Google displays correctly. However, Bing doesn’t display anything. I’ve checked their rules, and I’m not sure if Ghost is compliant. Any suggestions?
From what I can find, I don’t see any indication that Ghost isn’t compliant, but the requirements aren’t entirely clear. I was also able to find several Ghost sites with favicons showing in Bing search results. (I also did see some without it.)
Favicon crawlers act pretty slowly. They might only query your site every six months, so it might just be a waiting game. You can also try verifying your site via Bing’s webmaster tools and requesting crawling, if you haven’t already: Bing Webmaster Tools This may speed up the process