A black outline is not black when the grid size to 1

[HSDSZ]

Here I am trying pixel art style. I set the outline width to 1 pixel and color to black. But the render result is not pure black. How to let the outline be exactly the color I set independent from the grid size?

[HSDSZ]

Strange!

If I set the outline width scale to 2 pixel. The outline become black even though the rendered outline is still 1 pixel width

[pragma37]

Sorry for the late reply.
This is a known issue, I could fix it but I'm not sure if it's a good idea since it would change how existing materials look like. 🤔

[HSDSZ]

Could I know how to fix this? I could fix this in my own version

[pragma37]

I've recently updated the line_expand function, so I included this fix as well.
I hope it doesn't bother anyone. 🙄
(It's in the Development branch only for now)