---
title: Reality Composer Pro Beta 4 Release Notes
framework: Reality Composer Pro
role: article
role_heading: Article
path: realitycomposerpro/reality-composer-pro-beta-4-release-notes
---

# Reality Composer Pro Beta 4 Release Notes

Review known issues and changes in Reality Composer Pro 3.

## Overview

Overview Reality Composer Pro Beta 4 is a standalone app, available for download from the Apple Developer website, and is no longer part of Xcode. Reality Composer Pro requires a Mac with Apple silicon running macOS Tahoe 26.5 or later. Resolved Issues Fixed: When you enable clearcoat, specular occlusion is now visible. (175159311) Fixed: Light maps on cube and box primitives now render properly. (176278045) Fixed: The Particle Emitter inspector now includes the preset menu. Presets such as Fireworks, Impact, Magic, Rain, Snow, and Sparks can be applied from the editor. (165089607) General Known Issues Asset Generation is only supported on macOS 27. (178159978) Workaround: Update to macOS 27. Materials and Shaders Known Issues A material that uses subsurface scattering (SSS weight greater than 0) with specular roughness below 1 renders black on surfaces facing away from a directional or spot light. This affects both the RealityKit PBR and OpenPBR surface nodes when the material’s lighting descriptors in the Material Inspector are left Unspecified. (180306610) Workaround: In the ShaderGraph Material Descriptor Inspector, set lighting model to Lit, and Specular Model to GGX or GGX Anisotropy. Script Graph Known Issues “On Initialize” node can fail to start animation or audio on build and run. (182533099) Workaround: Use the “On Activate” node to start audio and animation events. Scripting and Shaders Known Issues When using world position in scripts or shaders, Reality Composer Pro content shifts relative to the world origin in shared space apps. (178279067) Workaround: Use relative position, or calculate the relationship of your content to the world origin and adjust your scripts or shaders accordingly. Refer to the Squirrel sample for examples. RealityKit Known Issues ComputeGraphComponent instances in a Reality file do not render when your app loads them. (177674901) Preview on visionOS Known Issues Textures in a scene may not load, leaving objects with a flat grey appearance. (182734493) Workaround: For textures to load correctly, enter immersive mode and then exit it.

## See Also

### Release notes

- [Reality Composer Pro Release Notes](realitycomposerpro/reality-composer-pro-release-notes.md)
- [Reality Composer Pro Beta 2 Release Notes](realitycomposerpro/reality-composer-pro-beta-2-release-notes.md)
- [Reality Composer Pro Beta 3 Release Notes](realitycomposerpro/reality-composer-pro-beta-3-release-notes.md)