Parmetis partioning very coarse meshes


I have been using parmetis to partition my finite element meshes, I am doing some test cases and
returning some partition zero size. I am doing very coarse meshes (for test cases) such that
44 triangular elements, if I tried to decompose 14 submeshes, it returned me 13 submeshes (which
is correct and covers whole mesh) but one empty mesh.

I wonder if this is expected by Parmetis.

If you can help me out, I will be glad