The icon is oversized on Mac. These guidelines might be able to help fix: https://developer.apple.com/design/human-interface-guidelines/app-icons#:~:text=iPad%2C%20iPad%20mini-,macOS%20app%20icon%20sizes,32x32,-tvOS%20app%20icon

This is the result of fixing the bug MCL-23471 incorrectly which it should be fixed properly so there are no issues.

The image attached is just to show that it's oversized. It's not to scale.

I have also attached an example from MCL-23471 of how to fix it (according to the reporter of MCL-23471 as of writing this) but it still is the white version when it should be the green version but it should still be useful.

I cannot guarantee that those guidelines can help fix, but it's worth trying.