# Multi-material mesh tiny instances disappear **URL:** \ **Category:** Bugs\ **Tags:** multimaterial, instances\ **Created:** [March 18, 2022, 4:25pm UTC](https://forum.babylonjs.com/t/multi-material-mesh-tiny-instances-disappear/28539 "2022-03-18T16:25:49Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![reb-ic](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/reb-ic/32/18481_2.png) [@reb-ic](https://forum.babylonjs.com/u/reb-ic)\ **Post date:** [March 18, 2022, 4:25pm UTC](https://forum.babylonjs.com/t/multi-material-mesh-tiny-instances-disappear/28539/1 "2022-03-18T16:25:49Z")
Hi, i have try to use thin instances with a multi-material mesh. The instances appear correctly but if i rotate or move the camera right all meshes disappear. I noticed that the meshes disappear when the position of the original mesh if out of the frustum. I doing something wrong or is bug? I created a playground [https://playground.babylonjs.com/#217750#68](https://playground.babylonjs.com/#217750#68) I tested this code with Chrome and Firefox on Ubuntu. Thanks! ---
**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:** [March 18, 2022, 10:55pm UTC](https://forum.babylonjs.com/t/multi-material-mesh-tiny-instances-disappear/28539/2 "2022-03-18T22:55:04Z")
yup you can force it to be active in order to prevent clipping [https://playground.babylonjs.com/#217750#69](https://playground.babylonjs.com/#217750#69) ---
**Author:** ![reb-ic](https://sea2.discourse-cdn.com/flex024/user_avatar/forum.babylonjs.com/reb-ic/32/18481_2.png) [@reb-ic](https://forum.babylonjs.com/u/reb-ic)\ **Post date:** [April 11, 2022, 4:09pm UTC](https://forum.babylonjs.com/t/multi-material-mesh-tiny-instances-disappear/28539/3 "2022-04-11T16:09:55Z")
Thank you very much.