needle engine 4.16 unity 6000.0.69f1 Uncaught Error: recursive use of an object detected which would lead to unsafe aliasing in rust at B.wbg.__wbindgen_throw (rapier3d.CxarogEY.js:1:73756) at 005fccd2:0x16c706 at 005fccd2:0x16c722 at 005fccd2:0x135745 at L.coTranslation (rapier3d.CxarogEY.js…

I’m not sure what caused it—possibly a caching issue. However, after updating to version 4.16.3, the caching problem no longer occurs. Note: The only physics feature I’m using is Raycast with BoxCollider. [image]

Hello oot4chi, thank you for bringing this issue to our attention. The error you’re encountering indicates a potential issue with recursive object handling in the Rapier3D physics engine, which could be due to a stale reference or a circular reference when updating physics bodies. To assist you bet…

use this.context.physics.engine?.raycast();

Hi, please provide a reproducible bugreport so we can look at the error. Otherwise we’re not able to help.

Hi without more info or a reproduction we’re not able to help. See my previous reply: Rapier3d physic bug - #6 by Marcel_Wiessler1 The errors you share are most likely happening because of what I said previously.

[image] console.warn(“Error running physics step”, { timestep: this.world.timestep }, e);

Based on the information you’ve provided, you’re seeing an error related to physics in Needle Engine, specifically during the physics step. The error message is logged with console.warn, indicating issues with running the physics step. The error occurs within a frame step of the physics simulation, …

error in needle engine line chunk-QF3ZUY34.js?v=56e8b093:34210 Frame #4340 Error: recursive use of an object detected which would lead to unsafe aliasing in rust at I3.wbg.__wbindgen_throw (rapier-STYG565K.js?v=56e8b093:2599:13) at 005fccd2:0x16c706 at 005fccd2:0x16c722 at 005fccd2:0xdf5cf a…

Hi oot4chi, Thank you for reaching out with the specific error details. It seems you are encountering an issue in Needle Engine related to the physics engine (Rapier Physics) where there is a recursive use of an object that would lead to unsafe aliasing in Rust. To better understand and address th…

Rapier3d physic bug

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Marcel_Wiessler1 (marwi) March 16, 2026, 3:34pm 6

What caching problem are you refering to? The rapier error can happen if somewhere in your project a Object3D with a Collider or Rigidbody gets invalid values (e.g. NaN values) as far as I know.

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Rapier3d physic bug

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