Playing tricks with web browser tabs - sizeof(cat)

For the past few months I've been getting several emails and people were asking me about the tomfoolery regarding my website and the web browser tabs. Basically people were wondering how the tab title and favicon change (to Reddit, Instagram, TikTok) when the tab with my website gets deactivated, and when it's reactivated it changes back to the initial text/image. Check it out yourself, click on another web browser tab, and then click back to this one. Interesting, eh? Annoying, eh? Can't decide?