"Implied" favicons are not being fetched

[TheRealGLH]

I wasn't quite sure what to title this, because I'm not quite sure what the convention is called. But this concerns websites (such as the Minecraft wiki) which don't actively define their favicon and have no similar icons (like Apple Touch icons) set in their tag, but instead just keep the favicon.ico file in the root of their web directory.

While web browsers will automatically fetch this file (I presume only when they don't see a favicon defined in the HTML), the API will fail to do so.