My hacker news icon has been stuck as the icon for a weather site that I sometimes check. It’s been stuck that way for close to a year now, and has survived an iOS update too.

It persists across profiles and into private browsing mode.

To me HN has been stuck as Facebooks icon for a really long time.

You guys have favicons? I don't have any in my tabs, but maybe I have turned that of at some point. I'm using Mozilla Firefox.

Firefox and Safari both have favicons in the tabs.

Yes, I also have them in general, e.g. on about:newtab, but for HN, there isn't any shown on the tab (there is if I make a bookmark). Maybe I messed something up.

Could site icons be connected somehow to iCloud?

For me the iOS HN icon changes between the reddit and github, depending on which one I've been using the most on my phone recently. This happens on both iOS Safari and Kagi's Orion.

I thought that this was just a bug in iOS but based on the comments in this thread, it seems to be common not only across OSes but browser vendors too (I assume iOS Orion uses the same engine as Safari)

Safari has super long lived favicon caches too. The only way to force a rebuild is to set your system clock forward a few years.

According to the Github page, you can just run `rm ~/Library/Safari/Favicon Cache/*`

yes, but time travel is cooler

iOS

I thought I was the only one! Something in the UI cache is so horribly corrupted and it has been for years on my MacBook, I just gave up hope.

I have the same, the Youtube icon is the Hacker news icon, and the other way round. I have to assume this is some sort of race condition, data corruption, or something else, and it's quite widespread too given all these reports.

I get the same bug in Firefox as well sometimes.

I get the wrong for HN in mobile Chrome

So a similar favicon bug exists in Safari, Firefox, and Chrome. Impressive!