It is a bug?

Sorry, bad english. :frowning:

Verts doesn’t use the subsurf/multiresolution the accounting of direction by means of normals.
Needed apply subsurf for good work.
Section of settings:
“Emission:
Emit From:”

It is a bug?

When i am use
Faces:Jittered - Particles/Face: N
instead of Verts, then division not disappears completely.
And you can see more artifacts in a camber place.