Safari Favourites favicons display initials
In the Safari browser, some favicons do not load on the Favourites page. Instead of the website icon, only the initial of the website name is displayed (see screenshot). I have tried clearing Safari history as well as the favicon cache (/Users/<username>/Library/Safari/Favicon Cache) multiple times, but the issue persists. When I clear all history, the favicons appear briefly and then disappear again. I have also tried deleting the affected website favourites and recreating them, but that did not resolve the issue.
Has anyone encountered this behavior before or found a fix? Any help would be appreciated.
Safari version: Version 26.2 (21623.1.14.11.9)
OS: macOS Tahoe 26.2
MacBook Pro 16″, macOS 26.2