Display - Lines thickness not consistent when not aligned to cplane view

Hi there,

I’ve noticed that lines don’t behave the same when not aligned to the view. They appear to be thicker than the ones in X/Y axis despite having the same properties.
The effect seems to be less noticeable when GPU Tessellation is off but that makes the colors then inconsistent.

See illustration below :

In rhino 7 :

Hi @romain.guillot I see differences too, thanks. What I see however is that in V8 curves that are orthogonal are thinner than non-orthogonal ones.

RH-73474 Orthogonal curves display thinner