# @babylonjs/core preview version

**URL:** <https://forum.babylonjs.com/t/babylonjs-core-preview-version/9395>\
**Category:** Questions\
**Created:** [March 23, 2020, 12:01pm UTC](https://forum.babylonjs.com/t/babylonjs-core-preview-version/9395 "2020-03-23T12:01:07Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Hersir](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/hersir/32/108_2.png) [@Hersir](https://forum.babylonjs.com/u/Hersir)\
**Post date:** [March 23, 2020, 12:27pm UTC](https://forum.babylonjs.com/t/babylonjs-core-preview-version/9395/2 "2020-03-23T12:27:09Z")

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Hi @ludevik we had discussion there [Warnings in version 4.1 using instantiateHierarchy](https://forum.babylonjs.com/t/warnings-in-version-4-1-using-instantiatehierarchy/9177/17), its bug definitely

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