Other users have noticed that the icon has inverted its colors, with a white backdrop against a blue "F." Thus far, no one has been able to explain this change or what caused it, and it doesn't ...

Some users running iOS 17 also encountered the black and blue icon. Additionally, there were reports of users seeing a white background with a blue Facebook logo. These variations further added to ...

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 ...

Some people have been perplexed when they found the Facebook icon as black. ... If you're on iOS 18 it's likely a bug. ... and then later returned to the traditional blue and white design.