Fur Affinity Forums

Whenever i'm browsing art submissions with multiple tabs, i'll occasionally catch a glimpse of some red images/symbols appear around the border of the entire page, but only for about a second or 2 before they disappear so i haven't been able to capture a screenshot of it or even identify what the symbols are. FA is the only site i've ever seen this effect appear and it only happens in Chrome. i've tried a bunch of times to trigger it so i can grab a screenshot but whenever i have my finger ready on PrtSc it stops happening. it seems to happen most often whenever i open 3-10 tabs of submissions at once (usually from my submissions inbox). As i switch/close tabs i'll randomly catch a glimpse of red and it startles me every time because it's always so sudden, attention-grabbing and honestly kinda creepy. My first guess is that it's an obnoxious ad graphic but it's unreasonably invasive and doesn't appear to serve any purpose that i can tell. i've gotten a few intrusive Peacock ads that dominate the bottom 3rd of the screen but they don't seem to appear as frequently as the scary red symbols.

What the heck am i seeing?