IOS 18.1.1 icons position changes after update of the related app on iPad Pro 12.9 (3rd gen).
In IOS 18 you can position icons on specific positions on a grid. This makes it easier to organize your apps as you please. I found however there is a bug that causes the position of an app-icon to change when the app is automatically updated. It then defaults to a position similar to that of the previous IOS 17 releases.
iPad Pro, iPadOS 18