Unity 2021.3.27

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Known Issues in 2021.3.27f1

  • Graphics Device Features: [URP][XR] Performance degradation when comparing Android Quest 2 builds across 2020.3 and 2023.x (UUM-33025)

  • Input: Crash on InputDeviceIOCTL when closing Unity editor (UUM-10774)

  • Linux: Crash on DisconnectGtkSignal(void*, GtkCallbackResponse ()(), void) when going through microgame tutorials (UUM-34847)

  • MacOS: Crash on objc_msgSend when the Editor UI gets redrawn (UUM-34202)

  • MacOS: Fix for 2021.3.X: Editor silently crashes when entering Play Mode on macOS (UUM-37060)

  • Metal: [iOS] Rendering freezes when the orientation is changed (UUM-9480)

  • Mono: Crash with ScanAssemblyForAttributesAndInterfaceImplementations when opening a project (1376858)

  • Project Browser: Project Browser shows package resources when package visibility is disabled (UUM-32517)

  • Visual Effects - Legacy: [Android][Vulkan] Visualisation corruption occurs when rendering Particles to Render Texture (UUM-21106)

  • Vulkan: Editor exits when opening the Scene view window or selecting a material (UUM-36647)

  • Vulkan: Oculus Quest 2 build does not work when built with Vulkan (UUM-10378)

  • Vulkan: [Quest 2] Build crashes on Quest 2 when Graphics Jobs are enabled (UUM-12524)

2021.3.27f1 Release Notes


  • Build System: Upgraded our windows 7zip-zstd fork to 7zip 22.01.


  • Editor: Input System: Updated Input System package to 1.6.1.

  • XR: Updated AR Foundation and related packages to version 4.2.8.


  • 2D: Fixed issue where GameObjects instantiated from a Tile are created, destroyed and created again when SetTile is called on a position that already contains an existing Tile. (UUM-35085)

  • Android: Allow different maximum MSAA samples count for different graphics formats. (UUM-25096)

  • Editor: Ensure long title do not clip the scene icon in the Scene Template Dialog. (UUM-25511)

  • Editor: Ensure the description field in Scene template dialog has the scrollview. (UUM-25425)

  • Editor: Fixed EditorWindowTitle which needed to be initialized explicitly through a call to EditorWindow.GetLocalizedContent. Now it is called automatically. (UUM-27557)

  • Editor: Fixed MacOS editors memory leak in batchmode/nographics mode. (UUM-12497)

  • Editor: Fixed margins appearing in game view on Windows displays with non-integer display scale. (UUM-32991)

  • Editor: Fixed material icons generation when switch from Built-In. (UUM-23330)

  • Editor: Fixed normal in editor when build platform is android. (UUM-32856)

  • Editor: Fixed styling of extra button action bar. (UUM-26518)

  • Editor: Fixed styling on the scene template help button. (UUM-27122)

  • Editor: Fixed VisualElement scheduler that may not run task in order when throttling. (UUM-35882)

  • Editor: Fixed Vorbis audio library security vulnerabilities CVE-2018-10392 and CVE-2018-10393. (UUM-5914)

  • Editor: Improved loading time of all text serialized files. (UUM-32952)

  • Editor: Listen to additive scene be added or removed and update the SceneProvider accordingly. (UUM-25053)

  • Editor: Running into networking issues while fetching ugs organizations no longer softlocks.

  • Editor: Text in Text Assets can now be selected in the inspector. (UUM-36233)

  • Editor: Types derived from type with CustomPreview have a custom preview. (UUM-9543)

  • Editor: Updated OpenSSL to 1.1.1u.

  • Editor: [Android] Changed name of symbols zip folder generated during build to include the backend specified, to ensure the folder is generated fresh when target architecture is changed but app name is not on 2022.2. (UUM-31480)

  • Editor: [SpeedTree] Fix SpeedTreeImporter::WriteDeferredAlphaCorrectionPaths crash when the Generate Materials is clicked. (UUM-28469)

  • Editor: [Windows] Audio.Thread marker in Profiler window is lasting whole frame while audio is playing. (UUM-401)

  • GI: Fixed a bug where moving the camera while in an scene visualization mode would cause light bakes to never finish. (UUM-34425)

  • Graphics: Fixed sporadic editor crash caused by render surface copy when using Vulkan. (UUM-35467)

  • Graphics: Fixed UI flickering due to invalid state post CommandBuffer execution. (UUM-32669)

  • Graphics: Fixed: Provide a way to avoid GC.Alloc with RenderMeshInstanced. (UUM-32183)

  • HDRP: Enabling raytracing no longer disable screen space lighting effect (SSAO, SSR) async compute. (UUM-31322)

  • HDRP: Made HDRP RenderPIpelineSettings public to enable customizing the HDRP asset. (UUM-33589)

  • HDRP: Properly take into account sky attenuation for baking. (UUM-28513)

  • HDRP: Updated HDRenderPipelineResources file. (UUM-36628)

  • Particles: Corrected set particle remaining lifetime to zero if killed by the trigger module when using ringbuffer mode. (UUM-32881)

  • Physics: Added a warning when cooking concave Mesh Colliders with the Fast Midphase option that have over 2,097,152 triangles. (UUM-30748)

  • Physics: Collider.material getter won't instantiate the material if called on the Prefab object. (UUM-30707)

  • Physics: Fixed a race condition that caused crashes in Contact Modification callbacks. (UUM-7389)

  • Physics: Fixed Articulation Bodies having default mass if they have no attached Colliders. (UUM-31794)

  • Shaders: Fixed a crash when trying to access the loading shader in a release build. (UUM-36827)

  • VFX Graph: Forbid blackboard category with only spaces in the name. (UUM-17495)

  • VFX Graph: Renaming a blackboard category that has been duplicated was removing the duplicated category. (UUM-17435)

Package changes in 2021.3.27f1

Packages updated

Packages added


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