I was sure this has been a thing for a while, either that or safari has a UI bug since forever.

I regularly get the wrong favicon in specific sites, for example ars technica favicon in reddit

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.

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.

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.

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 get the same bug in Firefox as well sometimes.

I get the wrong for HN in mobile Chrome