Annoying border around icon

Hey all, a game that I’ve upgraded to Unity 2021 has an annoying border around the icon on my Galaxy s10+ yet a game I newly made in Unity 2021 does not. Left is my old project, right is my new project.

I’ve tried copying all the settings to my old project but it still has the border. I only have the one image in the default icon slot in both projects, so that’s not the issue.

Anyone have a clue what might be the issue? Cheers

Updated to the latest version of Unity 2021 and it’s still doing it.