### Known Issues in 2020.3.15f2

*   AI: Crash with ComputeTileMeshJob when generating Navmesh ([1329346](https://issuetracker.unity3d.com/issues/crash-with-computetilemeshjob-when-generating-navmesh))
    
*   Asset Import Pipeline: Editor crashes while exiting play mode ([1328667](https://issuetracker.unity3d.com/issues/editor-crashes-while-exiting-play-mode))
    
*   Asset Importers: \[MacOS\] Second Unity instance in Activity Monitor is "not responding” after importing ([1331736](https://issuetracker.unity3d.com/issues/macos-second-unity-instance-in-activity-monitor-is-not-responding-after-importing))
    
*   Audio: Crash on AudioMixer\_CUSTOM\_FindSnapshot when passing null as an argument to FindSnapshot() ([1341752](https://issuetracker.unity3d.com/issues/crash-on-audiomixer-custom-findsnapshot-when-passing-null-as-an-argument-to-findsnapshot))
    
*   Global Illumination: Crash while sculpting Terrain and Baking Lightmaps ([1266511](https://issuetracker.unity3d.com/issues/crash-while-sculpting-terrain))
    
*   Global Illumination: \[LightProbes\] Probes lose their lighting data after entering Play mode when Baked and Realtime GI are enabled ([1052045](https://issuetracker.unity3d.com/issues/light-probes-lose-their-lighting-data-after-entering-play-mode-when-baked-and-realtime-gi-are-enabled))
    
*   Graphics Device Backends: CommandBuffer native plugin events hang in the Editor ([1308216](https://issuetracker.unity3d.com/issues/commandbuffer-native-plugin-events-hang-in-the-editor))
    
*   IMGUI: Editor's Toolbar is sometimes replaced by a white bar when opening any Scene ([1341951](https://issuetracker.unity3d.com/issues/white-screen-replaces-the-play-scale-position-bars-editor-cannot-play))
    
*   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))
    
*   Linux: Editor crashes at 'GfxFramebufferGLES::SetBackBufferColorDepthSurface' or freezes when creating a new shortcut profile ([1334874](https://issuetracker.unity3d.com/issues/editor-crashes-at-gfxframebuffergles-setbackbuffercolordepthsurface-or-freezes-when-creating-a-new-shortcut-profile))
    
*   Linux: Linux Editor crashes at "\_XFreeX11XCBStructure" when loading tutorials ([1323204](https://issuetracker.unity3d.com/issues/linux-editor-crashes-at-xfreex11xcbstructure-when-loading-tutorials))
    
*   Metal: Performance in Game View is significantly impacted by Gfx.WaitForPresentOnGfxThread when a second monitor is connected ([1327408](https://issuetracker.unity3d.com/issues/performance-in-game-view-is-significantly-impacted-by-gfx-dot-waitforpresentongfxthread-when-a-second-monitor-is-connected))
    
*   Mobile: \[Android\] Using TouchScreenKeyboard.Open with a non-empty placeholder multiple times causes the app to crash ([1347370](https://issuetracker.unity3d.com/issues/android-using-touchscreenkeyboard-dot-open-with-a-non-empty-placeholder-multiple-times-causes-the-app-to-crash))
    
*   Mobile Graphics: \[iOS\] Player crashing when connecting external Display via USB-C port ([1321153](https://issuetracker.unity3d.com/issues/ios-player-crashing-when-connecting-external-display-via-usb-c-port))
    
*   Mono: Crash on "(KERNELBASE) RaiseException" when reloading Mono assemblies for play mode ([1289744](https://issuetracker.unity3d.com/issues/crash-when-entering-play-mode-1))
    
*   Packman: User can't easily configure location of both UPM and Asset Store package local cache ([1317232](https://issuetracker.unity3d.com/issues/user-cant-easily-configure-location-of-both-upm-and-asset-store-package-local-cache))
    
*   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))
    
*   Profiling: GarbageCollectAssets is triggered frequently when higher frame counts are set ([1332708](https://issuetracker.unity3d.com/issues/garbagecollectassets-is-triggered-frequently-when-higher-frame-counts-are-set))
    
*   Profiling: Poor profiler performance when navigating the timeline view and reviewing data with many threads ([1339407](https://issuetracker.unity3d.com/issues/poor-profiler-performance-when-navigating-the-timeline-view-and-reviewing-data-with-many-threads))
    
*   Scene Management: Crash on BuildPrefabInstanceCorrespondingObjectMap when overriding nested prefab inside AssetDatabase.StartAssetEditing() block ([1324978](https://issuetracker.unity3d.com/issues/crash-on-buildprefabinstancecorrespondingobjectmap-when-overriding-nested-prefab-inside-assetdatabase-dot-startassetediting-block))
    
*   Scripting: Crashes on mono\_class\_init when entering Play Mode after recompiling scripts ([1262671](https://issuetracker.unity3d.com/issues/crashes-on-mono-class-init-when-entering-play-mode-after-recompiling-scripts))
    
*   Scripting: Increased Script Assembly reload time ([1323490](https://issuetracker.unity3d.com/issues/increased-reload-time))
    
*   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))
    
*   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))
    
*   Terrain: Crash on TreeRenderer::WillRenderTrees when being in Play Mode for several seconds ([1317966](https://issuetracker.unity3d.com/issues/crash-on-treerenderer-willrendertrees-when-being-in-play-mode-for-several-seconds))
    
*   Themes: Object Selector windows size slider disappears when only items with default icon are in the list ([1309396](https://issuetracker.unity3d.com/issues/object-selector-windows-size-slider-disappears-when-only-items-with-default-icon-are-in-the-list))
    
*   Video: Video player fails to start playing and null handle errors are thrown when running Unity Editor/Build with specific hardware ([1237818](https://issuetracker.unity3d.com/issues/video-player-fails-to-start-playing-and-null-handle-errors-are-thrown-when-running-unity-editor-slash-build-with-specific-hardware))
    
*   Vulkan: \[Editor\] The Scene's GameObjects textures are seemingly random and change colours depending on the Scene's Camera pos. ([1337772](https://issuetracker.unity3d.com/issues/vulkan-editor-the-scenes-gameobjects-textures-are-seemingly-random-and-change-colours-depending-on-the-scenes-camera-pos))
    
*   Windows: Editor crashes when exiting and keeping a tutorial project ([1338299](https://issuetracker.unity3d.com/issues/editor-crashes-when-exiting-and-keeping-a-new-micrograme-project))
    

### 2020.3.15f2 Release Notes

#### Features

*   Android: Users can include custom asset packs into the build, by adding assets to the directory ending with '.androidpack'.
    
*   Android: When building Android App Bundle with Split App Binary enabled, Unity will create asset packs.
    
*   Version Control: - Plastic: Added support for inviting other members. This option is available from the gear / settings icon.  
    
    *   Plastic: Added support for signing in with Cloud Edition. This is available during the onboarding screen if you have never signed in.  
        
    *   Plastic: Added support for turning off Plastic in their project. This option removes the Plastic metadata from your directory. This option is available under Assets > Plastic SCM > Turn off Plastic SCM  
        
    *   Plastic: Added notification on the Plastic SCM tab title to indicate incoming changes. Users will no longer need to have the Plastic SCM window visible to know there are incoming changes.  
        
    *   Plastic: Auto configuration of SSO  
        
    *   Plastic: Added date column in incoming changes

#### Improvements

*   Version Control: - Stability and performance improvements

#### API Changes

*   Android: Added: New APIs to manage fast-follow and on-demand delivered asset packs. The APIs wrap Google's PlayCore functionality.

#### Changes

*   Android: Android Gradle Plugin version upgraded from 3.6.0 to 4.0.1.
    
*   Android: Gradle version upgraded from 5.6.4 to 6.1.1.
    
*   Version Control: ### Changed  
    
    *   Updating license to better conform with expected customer usage.  
        
    *   Updated documentation file to meet standards.  
        
    *   Updated third-party usage.  
        
    *   No longer requires downloading of the full Plastic client. Basic features will work without additional installation. Features that require the full Plastic client will allow download and install as needed.  
        
    *   Usability improvements around checking in code  
        
    *   Improved update workspace tab UX  
        
    *   Plastic SCM context menu is now available even if the Plastic SCM window is closed

#### Fixes

*   Android: Fixed a crash caused by uncaught "java.lang.IllegalStateException: The specified child already has a parent" that mainly affects Android 7.x ([1347211](https://issuetracker.unity3d.com/issues/android-crash-with-java-dot-lang-dot-illegalstateexception-the-specified-child-already-has-a-parent))
    
*   License: Fix Licensing Client signature check in the Editor that led to some licenses not being accepted.
    

#### System Requirements

##### For development

**OS**: Windows 7 SP1+, 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