This question is an exact duplicate of:

I just got some rep notifications while I was chatting on chat.SE. Thanks to this awesome script, I have a top bar in chat, so I see something like this:

enter image description here

Now, suspecting that something may be wrong with the script showing it in the chat rooms, I went to the main chat.SE site, and... saw this same error.

enter image description here

To be sure, I spun up an incognito tab, where I don't have any scripts running (because normally I have 20+). And... still shows broken:

enter image description here

Apparently, English Language & Usage is now Stack Overflow en Español, Literature is now Magento, Mythology & Folklore is Network Engineering... Science Fiction & Fantasy and Meta don't seem to have been affected.

marked as duplicate by Nathan Tuggy, Glorfindel, ale, Robert Longson, Shadow The Curly Braced Wizard Dec 21 '17 at 19:47

This question was marked as an exact duplicate of an existing question.

  • I can confirm this. Apparently magento is not martial arts (not that I mind :D) : i.imgur.com/dMg0KhZ.png Stackoverflow does not seem to be affected. – Marius Dec 19 '17 at 20:47
  • We renamed Mythology and CogSci recently, so the favicon spritemap changed. The cache should update itself eventually and fix the problem. – Jon Ericson Dec 19 '17 at 21:04
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    Looks like the same bug as last time when the site list changed. @JonEricson, could you please ask somebody at SE to find out why the CSS and/or the sprite sheet updates aren't getting properly pushed out and fix them? The client-side cache breakers in the URLs are (AFAICT) working as designed, so it looks like an issue with SE's deployment process and/or with the CDN. (The fact that it only seems to affect some users each time also kind of suggests a CDN issue to me.) – Ilmari Karonen Dec 19 '17 at 21:30
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    @IlmariKaronen: It is a CDN issue. There's a race condition with the cache breakers and purging does not seem to work reliably. It's difficult for us to diagnose since we can never reproduce the problem ourselves. – Jon Ericson Dec 19 '17 at 21:36