Ionic android app icon , final dimensions on device are not the same of original 1024x1024

Hi, i created android icons following the ionic documentation, now i posted question on stack i am not going to duplicate it but check please:

Why the final app icon on the mobile is different? The red ball on the 1024x1024 original file is little, it gets full icon wide on the device, i don’t understand what’s wrong.

Thank you in advice.