Question Sprite Atlas distorts sprites

I recently started getting into Sprite Atlases but for some reason they display the sprites wrong.
The atlas slightly distorts the sprites, extending some pixels but leaving most of them alone and looking as they should.

As I'm using very low pixel sprites I have set Filter Mode to Point, Pixels Per Unit to 8 and no Compression. The Atlas also has no Compression and Filter Mode set to Point. The sprites look fine when I use them but they are wrong in the atlas itself.

I have tinkered with the import settings for both the sprites and the atlas and looked on the web but I still can't get it to work. I also re-imported the sprites and remade the atlas but the issue persists.

Of course, this doesn't change the functionality of the atlas at all. The atlas works and the sprites look fine in game, but I'm just wondering why they look all wrong in the atlas and if I can fix it somehow?
Thanks!

 

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