### Known Issues in 2020.3.0f1

*   Cloth: Cloth is broken when parent GameObject scale is lower than 1 and Surface Penetration constraints are set 0 ([1319488](https://issuetracker.unity3d.com/issues/cloth-is-broken-when-parent-gameobject-scale-is-lower-than-1-and-surface-penetration-constraints-are-set-0))
    
*   Mobile: FixedUpdate gets called multiple times before the first Update when Build is run on a Device ([1318647](https://issuetracker.unity3d.com/issues/mobile-fixedupdate-gets-called-multiple-times-before-the-first-update-when-build-is-run-on-a-device))
    
*   2D: "NullReferenceException: SerializedObject of SerializedProperty" is thrown when building Sprite Atlas ([1318332](https://issuetracker.unity3d.com/issues/nullreferenceexception-serializedobject-of-serializedproperty-is-thrown-when-building-sprite-atlas))
    
*   Shuriken: Crash on ParticleSystem\_ShapeModule\_CUSTOM\_set\_sprite\_Injected when changing the shape.sprite of a null ParticleSystem ([1319658](https://issuetracker.unity3d.com/issues/crash-on-particlesystem-shapemodule-custom-set-sprite-injected-when-changing-the-shape-dot-sprite-of-a-null-particlesystem))
    
*   Profiling: \[Profiler\] Timeline sample names from surrounding frames disappear when zooming or panning ([1317697](https://issuetracker.unity3d.com/issues/profiler-timeline-sample-names-from-surrounding-frames-disappear-when-zooming-or-panning))
    
*   Linux: Linux Editor throws "X Server took longer than x miliseconds to respond to SetGtkWindowSizeAndPosition" error after opening ([1309607](https://issuetracker.unity3d.com/issues/linux-editor-throws-x-server-took-longer-than-x-miliseconds-to-respond-to-setgtkwindowsizeandposition-error-after-opening))
    
*   Shuriken: Crash on ParticleSystem::EndUpdateAll ([1311212](https://issuetracker.unity3d.com/issues/shuriken-crash-on-particlesystem-endupdateall))
    
*   Shader System: Crash on PAL\_LocalIPC\_IsConnected when IPC fails on launch ([1319336](https://issuetracker.unity3d.com/issues/crash-on-pal-localipc-isconnected-when-ipc-fails-on-launch))
    
*   Universal RP: \[URP\] Unable to add "Overrides" in "Volume Profile" ([1318535](https://issuetracker.unity3d.com/issues/urp-unable-to-add-overrides-in-volume-profile))
    
*   Templates: Editor Crashes when performing Undo and Redo after duplicating Game Object with LEGO Model Asset component ([1298503](https://issuetracker.unity3d.com/issues/crash-when-redoing-and-undoing-pasting-prefabs-in-scene-in-lego-microgame))
    
*   Linux: InputSystem's Mouse delta values do not change when the Cursor lockState is set to Locked ([1248389](https://issuetracker.unity3d.com/issues/linux-inputsystems-mouse-delta-values-do-not-change-when-the-cursor-lockstate-is-set-to-locked))
    
*   Asset Importers: \[Performance Regression\] Importing an fbx model is noticeably slower when the model contains Animations ([1265275](https://issuetracker.unity3d.com/issues/performance-regression-importing-an-fbx-model-is-noticeably-slower-when-the-model-contains-animations))
    
*   Physics: Crash in physx::NpArticulationReducedCoordinate::createCache() when calling JointState.SaveJointState for unparented bodies ([1264800](https://issuetracker.unity3d.com/issues/crash-in-physx-nparticulationreducedcoordinate-createcache-when-calling-jointstate-dot-savejointstate-for-unparented-bodies))
    
*   Shader System: \[URP Template\] Major performance drop in the Editor during Play Mode ([1277222](https://issuetracker.unity3d.com/issues/urp-template-major-performance-drop-in-the-editor-during-play-mode))
    
*   Mobile: Screen.dpi returns 0 on iPad Pro for projects built from 2019.4.16f1 ([1300359](https://issuetracker.unity3d.com/issues/screen-dot-dpi-returns-0-on-ipad-pro-for-projects-built-from-2019-dot-4-16f1))
    
*   Cloth: Skinned Mesh Renderer's Bounds Extent is set to half of the Transform's Scale when using a Cloth Component ([1209765](https://issuetracker.unity3d.com/issues/skinned-mesh-renderers-bounds-extent-is-set-to-half-of-the-transforms-scale-when-using-a-cloth-component))
    
*   Shader System: Shader error db grows on each build ([1317744](https://issuetracker.unity3d.com/issues/shader-error-db-grows-on-each-build))
    
*   Serialization: Editor crashes on RaiseException when allocating huge amount of memory ([1313492](https://issuetracker.unity3d.com/issues/editor-crashes-on-raiseexception-when-allocating-huge-amount-of-memory))
    
*   Polybrush: \[PolyBrush\] Something went wrong saving brush settings Warning is thrown when Saving a Brush after opening the PolyBrush Window ([1315475](https://issuetracker.unity3d.com/issues/polybrush-something-went-wrong-saving-brush-settings-warning-is-thrown-when-saving-a-brush-after-opening-the-polybrush-window))
    
*   Templates: \[Linux\] Missing libdl.so library causes crash when entering Playmode for the second time or closing the Editor ([1237642](https://issuetracker.unity3d.com/issues/missing-libdl-dot-so-library-causes-crash-when-entering-playmode-for-the-second-time-or-closing-the-editor))
    

### 2020.3.0f1 Release Notes

#### Fixes

*   Asset Import: Fixed a rare unstable asset hash for assets with large metadata. ([1285620](https://issuetracker.unity3d.com/issues/consistency-checker-logs-say-that-import-results-are-inconsistent-for-textures))
    
*   Audio: Fixed a DSPGraph/Burst player crash. ([1297730](https://issuetracker.unity3d.com/issues/dspgraph-playclip-sample-crashes-in-windows-slash-x64-build))
    
*   Editor: Fixed a ReorderableList GC issue due to registry usage. (1315466)
    
*   Editor: Fixed issue on Windows where mouse pointer did not hide while in Play mode. ([1273522](https://issuetracker.unity3d.com/issues/the-cursor-dot-visible-equals-false-does-not-work-when-inputsystem-package-is-installed))
    
*   Graphics: A CopyDepth pass was previously included which allowed users script access to \_CameraDepthTarget but this has been removed on the metal GPU families that use Tile-based renderers (iOS, Silicon-GPU), fixed the performance decrease that caused this ([1298799](https://issuetracker.unity3d.com/issues/ios-copydepth-pass-is-present-in-the-legacy-deferred-render-pipeline-and-results-in-extra-render-target-memory-and-gpu-time))
    
*   macOS: Fixed a code signing issue of native plugins in Xcode projects. ([1276317](https://issuetracker.unity3d.com/issues/xcode-macos-bundle-plugins-are-not-signed-in-xcode-projects))
    
*   macOS: Fixed an issue when exported macOS Standalone player builds were refusing to launch and showing "<Unity app> was damaged and could not be opened" error when downloaded from the internet. ([1304455](https://issuetracker.unity3d.com/issues/macos-builds-now-contain-a-quarantine-attribute))
    
*   Scene Manager: Fixed a crash when the asset of a current opened scene had been deleted, a new scene asset was imported, with same GUID, and the user choose "reload". ([1309393](https://issuetracker.unity3d.com/issues/freeze-or-crash-on-editorscenemanager-reloadscene-when-importing-an-asset-and-reloading-the-opened-scene))
    
*   Scripting: Fixed an issue when Application.quitting event was not raised when application was terminated from the OS side. ([1309540](https://issuetracker.unity3d.com/issues/application-dot-quitting-event-is-not-raised-when-closing-build))
    
*   Scripting: Validate cyclic dependencies on assembly definition update ([1293762](https://issuetracker.unity3d.com/issues/exception-thrown-instead-of-error-when-creating-assembly-with-cyclic-reference))
    
*   Serialization: Fixed a crash when using JSONUtility to deserialize objects that had Serialized References. ([1296236](https://issuetracker.unity3d.com/issues/jsonutility-deserialization-corrupted-values))
    
*   UI Toolkit: Fixed an issue where use cases for SerializedObject bindings would cause the Editor to crash. ([1305198](https://issuetracker.unity3d.com/issues/serializereference-editor-crashes-when-creating-a-graphview-node-after-deleting-a-graphview-node-with-serializedproperty))
    

#### Changes

*   Graphics: Update SRP packages to 10.3.2 ([1298466](https://issuetracker.unity3d.com/issues/visual-effect-graph-infinite-compilation-when-opening), [1309219](https://issuetracker.unity3d.com/issues/shadergraph-undeclared-identifier-unitybuildtexture2dstructnoscale-errors-when-using-a-sample-texture-2d-node-in-a-vfx-sg))

#### System Requirements

##### For development

**OS**: Windows 7 SP1+, 8, 10, 64-bit versions only; macOS 10.13+. (Server versions of Windows & OS X are not tested.)

**CPU**: SSE2 instruction set support.

**GPU**: Graphics card with DX10 (shader model 4.0) capabilities.

The rest mostly depends on the complexity of your projects.

###### Additional platform development requirements:

*   iOS: Mac computer running minimum macOS 10.13+ and Xcode 9.0 or higher.
    
*   Android: Android SDK and Java Development Kit (JDK); IL2CPP scripting backend requires Android NDK.
    
*   Universal Windows Platform: Windows 10 (64-bit), Visual Studio 2015 with C++ Tools component or later and Windows 10 SDK
    

##### For running Unity games

Generally content developed with Unity can run pretty much everywhere. How well it runs is dependent on the complexity of your project. More detailed requirements:

*   Desktop:
    
    *   OS: Windows 7 SP1+, macOS 10.13+, Ubuntu 18.04+
    *   Graphics card with DX10 (shader model 4.0) capabilities.
    *   CPU: SSE2 instruction set support.
*   iOS player requires iOS 11.0 or higher.
    
*   Android: OS 4.4 or later; ARMv7 CPU with NEON support; OpenGL ES 2.0 or later.
    
*   WebGL: Any recent desktop version of Firefox, Chrome, Edge or Safari.
    
*   Universal Windows Platform: Windows 10 and a graphics card with DX10 (shader model 4.0) capabilities
    
*   Exported Android Gradle projects require Android Studio 3.4 and later to build