I noticed my PC was sending DNS requests all day long for for sites that would be in my very very old bookmarks. Upon further investigation, I saw it was actually opening connections and sending HTTP requests to all those servers via QUIC. Constantly contacting these websites I haven't touched in years even while I'm away at work. Stopped this unsettling traffic by disabling HNTP

Missing icons for random bookmarks on Firefox (inside the new page view, not Firefox bookmark folder itself). No issue on Brave.