Offset curves after Morph2D come with edges and are not smooth

I designed a curve using Grasshopper and want to use this “unit” curves to make pattern.
Morph2D is the panel tool I used.

The unit curve after offset is looking good, and there are no abnormal edge or anything show up.
However, the offseted curve after Morph2D operation showed some abnormal edges.

I tried joining curves after Morph2D operation, but it stays the same.

Can anyone tell me any way to fix it?


Lattice-2d-20240817-F.gh (19.5 KB)

Lattice-2d-20240817-F_re01.gh (16.1 KB)

-Kevin