we are SO back, found the issue

src/model/mesh.rs

@@ -137,7 +137,7 @@ impl Mesh {
         println!("vertices.len is: {}", self.vertices.len());
         let data = core::slice::from_raw_parts(
             self.vertices.as_ptr() as *const u8,
-            self.vertices.len() * core::mem::size_of::<Vector3<f32>>() * 3,
+            self.vertices.len() * core::mem::size_of::<Vertex>(),
         );
 
         gl.named_buffer_data_u8_slice(self.VBO.unwrap(), data, glow::STATIC_DRAW);