# \[sandbox\] Display normals changes position of thin instance mesh

**URL:** <https://forum.babylonjs.com/t/sandbox-display-normals-changes-position-of-thin-instance-mesh/55634>\
**Category:** Bugs\
**Tags:** sandbox, inspector, thininstances, bug\
**Created:** [December 30, 2024, 8:38am UTC](https://forum.babylonjs.com/t/sandbox-display-normals-changes-position-of-thin-instance-mesh/55634 "2024-12-30T08:38:39Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![kzhsw](https://avatars.discourse-cdn.com/v4/letter/k/848f3c/32.png) [@kzhsw](https://forum.babylonjs.com/u/kzhsw)\
**Post date:** [December 30, 2024, 8:38am UTC](https://forum.babylonjs.com/t/sandbox-display-normals-changes-position-of-thin-instance-mesh/55634/1 "2024-12-30T08:38:39Z")

</div>

Version: 7.42.0  
Engine: webgl2

Steps to reproduce:

1. get a model here:  
[teapots\_galore.zip](https://forum.babylonjs.com/uploads/short-url/tyE9WkDe5xLPIGFO11siXBviFv7.zip) (78.9 KB)
2. Display inspector
3. Find `teapot` mesh  
 ![teapot mesh](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/d/1/d1272e8972fec976a6c674f163007ed495029f76.png)
4. Check “Display normals”  
 ![Display normals](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/b/1/b139c316373a44d6a10786f0162c4b252216cb7c.png)

Expected:  
Normals rendered at the same position of original mesh.

 ![Original mesh](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/1/f/1f7de060189d0bd2d1020b33d180352ba6f2cb47.jpeg)

Actual:

 ![Position changed](https://us1.discourse-cdn.com/flex024/uploads/babylonjs/original/3X/6/e/6e51d96eb479e68ebfde9ee6edb265bdf3e53a45.jpeg)

---

<div class="post-metadata">

**Author:** ![sebavan](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/sebavan/32/57_2.png) [@sebavan](https://forum.babylonjs.com/u/sebavan)\
**Post date:** [December 31, 2024, 12:20am UTC](https://forum.babylonjs.com/t/sandbox-display-normals-changes-position-of-thin-instance-mesh/55634/2 "2024-12-31T00:20:36Z")

</div>

This will fix it [Fix NormalMaterial with ThinInstances by sebavan · Pull Request #16028 · BabylonJS/Babylon.js · GitHub](https://github.com/BabylonJS/Babylon.js/pull/16028)