However, others under the Reddit thread, including the original poster, said that their app's icon changed, and they are still on iOS 17, leading many to guess that it may just be a glitch.

The Facebook icon now is appearing as a black background with a blue "F," rather than the traditional white on blue, for some users.

The Facebook mobile-app icon suddenly turned black and blue — from blue and white — for some users. Does this mark Facebook's new dark, edgy era? Nope, it's just a bug, according to Meta PR ...

Why is the Facebook icon black? Dozens of respondents chimed in with their own experiences, many saying the darker background icon appeared after an app update. "I thought I was tripping, I let my ...