Was about to open this issue myself when I found yours. This is also happening to me.
Steps to reproduce:
Add various site-specific settings for websites with a favicon set.
I have observed incorrect favicons in the Cookies, Page Zoom, Reader Mode lists so it appears to be in all lists containing icons.
Expected behavior:
The correct favicon should be displayed next to the corresponding website on the list.
Orion, OS version; hardware type:
Orion 0.99.111-beta (Webkit 613.1.12)
MacOS Monterey 12.1
16" MacBook Pro 2021
Image/Video: