Unity 6000.5.0a3

ALPHA

Released Tuesday, December 16, 2025

✨

AI Summary

Premium

Unity 6000.5.0a3 focuses on stability and rendering improvements, particularly addressing issues within the Universal Render Pipeline (URP) and DirectX 12. Several critical crashes and freezes related to graphics APIs and specific render pipeline configurations have been resolved, aiming for a more robust development experience.

Key Highlights

  • ▸Resolved crashes and freezes related to DirectX 12, Metal, and URP shader compilation.
  • ▸Addressed issues with SRP Templates and VR Module dependencies, improving URP project compilation.
  • ▸Fixed a regression in UI Elements CollectionView context menu behavior.
  • ▸Improved stability for Windows Standalone player builds.

⚠️ Known Issues

  • UUM-128197 Core Runtime: Editor hangs when ComponentSystemGroup update in itself
  • UUM-105801 DirectX12: Crash on D3D12DeviceState::ApplyRenderTargets when creating a new "Get Started With Unity" project
  • UUM-104889 DirectX12: [Intel] Crash on BufferD3D12::BeginWrite when opening a newly created URP project with DirectX12 set as the default graphics API
  • Editor: Clone editors don't load scripts properly
  • (UUM-129816)
  • *First seen in 6000.5.0a3.* *Fixed in 6000.5.0a4.*
  • Editor: Fix tooltip lingering when cursor move away from the tooltip Rect
  • (UUM-128433)
  • *First seen in 6000.5.0a2.* *Fixed in 6000.5.0a4.*
  • Editor: Fixes a regression where calling PingObject\(int\) causes a recursive call.
  • (ECSB-1822) *Fixed in 6000.5.0a4.*
  • Editor: SceneProvider doesn't listen to objectChanged \(only those triggered by user changes\). Also SceneProvider sets its listener in onEnable
  • (UUM-128658)
  • *First seen in 6000.5.0a2.* *Fixed in 6000.5.0a4.*
  • UUM-128966 Mesh: Crash on SkinnedMeshRendererManager when interacting with a prefab generated with uncombined meshes using Synty Sidekick Character Creator
  • UUM-125778 Metal: Game freezes after command buffer Timeout error
  • UUM-121453 Metal: [iOS] Screen flashing after the iOS splash screen
  • UUM-130674 Shader System: Crash on keywords::PrintKeywordSpaceInfo when uninstalling Universal Render Pipeline in a specific project
  • SRP Core: Render Graph Viewer - NullReferenceException that occurs when entering/exiting Play Mode while the Render Graph Viewer is paused.
  • (UUM-128869) *Fixed in 6000.5.0a4.*
  • UUM-130083 SRP Templates: Removed VR Module dependency prevents URP Sample from compiling
  • UI Elements: Updated the CollectionView control to return the correct root item for the context menu to consume.
  • (UUM-129541) *Fixed in 6000.5.0a4.*
  • UUM-129814 Windows: Certain player settings missing from Windows, Linux and macOS player settings
  • Windows: Fix the build and run exception for the Windows Standalone player.
  • (UUM-127895)
  • *First seen in 6000.5.0a2.* *Fixed in 6000.5.0a4.*

All Changes by Category

🏗️Build System(2)

improvement

Windows: Fix the build and run exception for the Windows Standalone player. (UUM-127895)<br> *First seen in 6000.5.0a2.* <br>*Fixed in 6000.5.0a4.*

improvement

UUM-129814 Windows: Certain player settings missing from Windows, Linux and macOS player settings

🔧Editor(4)

improvement

Editor: Fix tooltip lingering when cursor move away from the tooltip Rect (UUM-128433)<br> *First seen in 6000.5.0a2.* <br>*Fixed in 6000.5.0a4.*

improvement

- UUM-128197 Core Runtime: Editor hangs when ComponentSystemGroup update in itself

improvement

Editor: Clone editors don't load scripts properly (UUM-129816)<br> *First seen in 6000.5.0a3.* <br>*Fixed in 6000.5.0a4.*

improvement

Editor: SceneProvider doesn't listen to objectChanged \(only those triggered by user changes\). Also SceneProvider sets its listener in onEnable (UUM-128658)<br> *First seen in 6000.5.0a2.* <br>*Fixed in 6000.5.0a4.*

📝General(2)

improvement

UUM-105801 DirectX12: Crash on D3D12DeviceState::ApplyRenderTargets when creating a new "Get Started With Unity" project

improvement

UUM-125778 Metal: Game freezes after command buffer Timeout error

🎨Graphics(5)

improvement

UUM-130674 Shader System: Crash on keywords::PrintKeywordSpaceInfo when uninstalling Universal Render Pipeline in a specific project

improvement

SRP Core: Render Graph Viewer - NullReferenceException that occurs when entering/exiting Play Mode while the Render Graph Viewer is paused. (UUM-128869) <br>*Fixed in 6000.5.0a4.*

improvement

UUM-128966 Mesh: Crash on SkinnedMeshRendererManager when interacting with a prefab generated with uncombined meshes using Synty Sidekick Character Creator

improvement

UUM-130083 SRP Templates: Removed VR Module dependency prevents URP Sample from compiling

improvement

UUM-104889 DirectX12: [Intel] Crash on BufferD3D12::BeginWrite when opening a newly created URP project with DirectX12 set as the default graphics API

📱Mobile(1)

improvement

UUM-121453 Metal: [iOS] Screen flashing after the iOS splash screen

🖼️UI(2)

improvement

UI Elements: Updated the CollectionView control to return the correct root item for the context menu to consume. (UUM-129541) <br>*Fixed in 6000.5.0a4.*

improvement

Editor: Fixes a regression where calling PingObject\(int\) causes a recursive call. (ECSB-1822) <br>*Fixed in 6000.5.0a4.*

View original release notes: Unity 6000.5.0a3 Release Notes