For a few minutes the icons changed while I was playing Neptunes pride triton. The pic below shows the carrier icons and the mail icon are different than normal. This lasted for a few minutes yesterday around 12 pm EST.
ic
That can happen sometimes when the custom font I made for those icons goes missing.
The little colourful rocket is built into iOS but may of the others are not.
Nice to know that this bug didn’t affect the game in anyway.