Problem with transform.InverseTransformDirection and non-uniform scale

I made the plane to work with mesh vertices

 var plane = new Plane(
      hit.transform.InverseTransformDirection(normal),
      hit.transform.InverseTransformPoint(position)
 );

If the object has the uniform scale then all looks good

but otherwise the plane normal has weird angle and I don't understand why.

with.InverseTransformVector even worser. The angle goes 2 times bigger

Blue line - my plane

Green spheres - plane intersections

white sphere - plane center

UPDATE

There is code to reproduce

Place component to default cube in zero position, rotate it with Y != 0, scale ONE horizontal dimesion. You will see onesided plane.

 using UnityEngine;

 public class PlaceOnCube : MonoBehaviour
 {
 public Vector3 PlaneOrigin = new Vector3(0, 0, 0);
 public Vector3 PlaneNormal = new Vector3(1, 0, 0);

 private void OnDrawGizmos()
 {
     Gizmos.DrawSphere(PlaneOrigin, .03f);

     var plane = new Plane(
            transform.InverseTransformDirection(PlaneNormal),
            transform.InverseTransformPoint(PlaneOrigin)
            );

     ReGeneratePlane(plane);
 }

 private void ReGeneratePlane(Plane plane)
 {
     var meshfilter = transform.GetComponent<MeshFilter>();
     var mesh = meshfilter.mesh;
     var tris = mesh.triangles;
     var verts = mesh.vertices;
     var newTris = new int[36 + 6];
     var newVerts = new Vector3[24 + 4];

     for (int j = 0; j < verts.Length; j++)
         newVerts[j] = verts[j];

     newVerts[24] = plane.ClosestPointOnPlane(new Vector3(-2, -1, 0));
     newVerts[25] = plane.ClosestPointOnPlane(new Vector3(2, -1, 0));
     newVerts[26] = plane.ClosestPointOnPlane(new Vector3(-2, 1, 0));
     newVerts[27] = plane.ClosestPointOnPlane(new Vector3(2, 1, 0));

     for (int j = 0; j < tris.Length; j++)
         newTris[j] = tris[j];

     newTris[36] = 24;
     newTris[37] = 26;
     newTris[38] = 25;
     newTris[39] = 26;
     newTris[40] = 27;
     newTris[41] = 25;

     mesh.vertices = newVerts;
     mesh.triangles = newTris;

     meshfilter.mesh = mesh;
 }
 }