I upgraded to windows 10. When I went into firefox all my bookmarked websites had a generic black globe icon. I have to reload every website one by one to get the appropriate website icon back. When I reloaded all bookmarks in one of my folders they all changed to the appropriate icon except these forums. It still shows a generic black globe. Why isn’t this website creating a blizzard icon in Firefox?
The term for a standard website or webpage icon is favicon, for future reference.
Unfortunately, there are multiple reasons a favicon might not render properly, so troubleshooting is difficult.
Try clearing your cache, opening the Bookmarks Sidebar (Ctrl + I), loading Hearthstone Forums anew, dragging the forums tab into your Bookmarks Toolbar to add it as a new favorite, then deleting the old bookmark.
Good luck! 
they are rendering perfectly for every website except this one so my guess it’s something to do with these new forums website .
Even if it’s a problem on Blizzard’s end, I would rather have them work on the game than an icon in firefox.
Not me I couldn’t care less about new cards and the game works perfectly fine , however this icon problem is ticking me off