That left my Facebook icon with the dark background after the app update. My phone was not in dark mode. The iOS update to 17.6.1 also was available for my phone, which I also installed.

"It's a feature on the iOS 18 beta. You can make your background dark plus your icons either light, dark, or tinted (based on the color of your background or whatever color you want)," said one reply.

However, the black icon change seems more haphazard and has not been accompanied by any official announcement from Meta. On Reddit's r/ios subreddit , the original poster asked people about the ...