Hi, I can’t figure out how to remove this artifact on sprite atlas.
The original atlas appears to be good, and also the sprite list:
Any hint? Thanks!
The artifact is most likely part of the adjacent sprite in the texture.
Make sure the X & Y coordinates of the sprite are correct as well as width and height.
You may need to add some padding between your sprites in the texture.
@Klamore74 but have you checked your alpha channel in image editing app? Are you sure you don’t have junk there. 
I’d suspect that first, especially if you have proper padding in place.
If you can’t find the source of the issue, please export the texture and sprite asset and provide those to me here or via private message so I can take a look at them.