XGen Density mask doesn't follow the white mask paint

[amukherjee728]

New to xgen.
After completing the head scalp hair, I started with the eyebrows. While making the density mask I am facing this issue where the hair root doesn't follow the density mask painted. I have painted with the hard brush after flooding black but getting this result of a chunk of hair appearing outside the mask.

 
As marked in yellow a small chunk seems to appear outside the mask. Doesn't matter if map resolution is at default 5 or 40, tried increasing paint mask resolution up to 8k. UV is within 0-1 in a single set with lambert material.

I want the hair to be within the red arc.

Can somebody help me out?

Thanks.

[Christoph_Schaedl]

How big is the mesh? 
Is your Maya set to cm?

[amukherjee728]

Yes, currently the scene is in centimeters, mesh scale in the scene is pretty small (likely 2 cm). Didn't make a 1:1 of the model

[Christoph_Schaedl]

Duplicate the mesh and scale it up. And do a quick test.

[amukherjee728]

I scaled up the mesh by 10x within the same scene (cm) but resulted the same after defining the mask in 40 map resolution.

If a face is >50% masked in white then the complete face generates hair defying the masked region. Do I have to have a high poly base for hair generation with xgen description?
In the scalp mask the density map worked quite fine as intended:

[Christoph_Schaedl]

Give it a try and subdivide it once.

[amukherjee728]

Base mesh for the eyebrows was smoothened by a division which gives better control over the mask.

But the core issue remains where the only output of paint map is either a face is 0 or 1, i.e., I can't get precise control with mask unless the base mesh is similar to a HP sculpt mesh or the topology defines the boundary of the hairline.
Also tried masking with cut modifier but result remains same where it is either 0 or 1 nothing in between:

Is there any alternate solution or tool to achieve the intended result?

[Christoph_Schaedl]

This should work. 
Could you try it again in a new scene on a sphere please?

[amukherjee728]

A default scene in cm scale, masked on a 12cm sphere and 2cm cube.

 @Christoph_Schaedl In a new scene of cm scale gaps are visible with a density of 2400. At certain brush size, the random spread shows gaps between chunks and some appearing outside of mask as well as not appearing at some places of mask.

[artur_ledurPGKTD]

Hello, I’m facing the same issue.
Did you solve it?

I really don’t know what else to try. When viewing the mesh in wireframe mode, I can see that these “gaps” in the hair strands (even with the density mask painted in that region) seem to follow the polygon edges. I really want to find a solution for this.