Waiting: This icon appears when an app is in a queue to be download. This blank icon is often seen when you have downloaded multiple apps. In these cases, some apps will be actively downloading ...

iOS 18 will give iPhone users greater control over Home Screen app icon arrangement ... the update will introduce the ability to create blank spaces, rows, and columns between app icons.

Some users have experienced abnormal behavior where their Windows 11/10 Taskbar icons are not showing, become invisible, go missing, become empty or blank or ... Fixer to fix PNG/JPG associations ...