### Known Issues in 2019.2.9f1

*   Android: Application.internetReachability returns NotReachable on certain devices even if internet is available ([1178696](https://issuetracker.unity3d.com/issues/android-application-dot-internetreachability-returns-notreachable-when-trying-to-receive-unitywebrequest))
    
*   Graphics - General: Project crashes on opening in ShaderLab::IntShader::PostLoad(Shader\*) ([1184997](https://issuetracker.unity3d.com/issues/project-crashes-on-opening-in-shaderlab-intshader-postload-shader-star))
    
*   Input: \[Windows\] IMGUI input doesn't work in builds when using preview InputSystem package ([1183394](https://issuetracker.unity3d.com/issues/imgui-input-doesnt-work-in-builds-when-using-preview-inputsystem-package))
    
*   Mobile: Player Settings window becomes blank and starts spitting errors after going to Android Settings > Icon ([1177292](https://issuetracker.unity3d.com/issues/player-settings-window-becomes-blank-and-starts-spitting-errors-after-going-to-android-settings-icon))
    
*   Mobile: \[Android\] Crash in java.lang.UnsatisfiedLinkError when application location is changed to SD card on Android device ([1181365](https://issuetracker.unity3d.com/issues/android-crash-in-java-dot-lang-dot-unsatisfiedlinkerror-when-application-location-is-changed-to-sd-card-on-android-device))
    
*   Physics: Crash on block\_remove when changing mesh to Plane in Skinned Mesh Renderer while cloth component attached ([1162918](https://issuetracker.unity3d.com/issues/crash-on-block-remove-when-changing-mesh-to-plane-in-skinned-mesh-renderer-while-cloth-component-attached))
    
*   Profiling: "Other" category is not shown in the player Profiler graph if a sample is not selected ([1165477](https://issuetracker.unity3d.com/issues/other-category-is-not-shown-in-the-player-profiler-graph-if-a-sample-is-not-selected))
    
*   Profiling: \[Ubuntu\]Unity hangs when Deep Profiling and Call Stacks are enabled. ([918779](https://issuetracker.unity3d.com/issues/ubuntu-unity-hangs-when-deep-profiling-and-call-stacks-are-enabled))
    
*   Scene Management: Enabled Prefab is disabled after upgrading to Improved Prefabs ([1138224](https://issuetracker.unity3d.com/issues/enabled-prefab-is-disabled-after-upgrading-to-improved-prefabs))
    
*   Scene Management: Transform::GetWorldToLocalMatrix crash during first import when accessing Components in Prefabs ([1159905](https://issuetracker.unity3d.com/issues/transform-getworldtolocalmatrix-crash-during-first-import-when-accessing-components-in-prefabs))
    
*   Scripting: Custom built DLL's scripts which have classes derived from UIBehaviour cannot be added as a component anymore ([1160664](https://issuetracker.unity3d.com/issues/custom-built-dlls-that-have-scripts-which-have-classes-derived-from-uibehaviour-cannot-be-added-as-a-component-anymore))
    
*   Scripting: Handles.Disc function performance is very slow in Scene View ([1165684](https://issuetracker.unity3d.com/issues/handles-dot-disc-function-performance-is-very-slow-in-scene-view))
    
*   Scripting: \[Templates\] Clamp BlendShapes are set to true by default when creating new projects ([1148638](https://issuetracker.unity3d.com/issues/templates-clamp-blendshapes-are-set-to-true-by-default-when-creating-new-projects))
    
*   iOS: \[iOS 13\] UnityWebRequest.SendWebRequest() crashes when opening local file with "file:///" prefix ([1183600](https://issuetracker.unity3d.com/issues/ios-13-unitywebrequest-dot-sendwebrequest-crashes-when-opening-local-file-with-file-slash-slash-slash-prefix))
    

### 2019.2.9f1 Release Notes

#### System Requirements Changes

Nothing changed.

#### Fixes

*   AI: Fixed an issue with NavMesh carving which prevents paths from passing in-between two obstacles placed at particular positions near tile borders. ([1154946](https://issuetracker.unity3d.com/issues/navmesh-navmesh-fails-to-create-all-portals-connecting-two-tiles-when-having-obstacles-aligned-on-the-tile-borders), 1185371)
    
*   Android: Fixed an Android video player crash. ([1166265](https://issuetracker.unity3d.com/issues/android-app-crashes-on-shutdown-when-freeing-resources-related-to-androidvideomedia), 1173723)
    
*   Editor: Fixed an incorrect handling of Unicode characters that use 2 bytes in the application file name when building the Player. ([1169358](https://issuetracker.unity3d.com/issues/japanese-diacritic-symbols-are-missing-from-the-build-executable-file-when-building-the-project), 1173299)
    
*   Editor: Fixed an issue with "Find References In Scene" where it does not list references for scripts within packages. ([1161019](https://issuetracker.unity3d.com/issues/find-references-in-scene-does-not-list-references-for-scripts-within-packages), 1175543)
    
*   Graphics: Fixed a crash in Async. (1136489, 1186906)
    
*   Graphics: Fixed a shader compiler crash on some tessellation shaders without proper target pragma. ([1162342](https://issuetracker.unity3d.com/issues/shader-compiler-errors-are-occurring-when-using-hull-shader), 1175188)
    
*   IL2CPP: Fixed a possible crash in the debugger when stepping through managed code frames where some callers do not have symbol files. ([1184047](https://issuetracker.unity3d.com/issues/il2cpp-player-crashes-when-debugging-safehandle-dot-releasehandle), 1185504)
    
*   Scripting: Fixed a crash in SortByExecutionOrder when reloading assemblies in the editor. ([1179631](https://issuetracker.unity3d.com/issues/crash-on-sortbyexecutionorder-after-setting-up-font-kerning-values-when-playerprefs-dot-deleteall-is-called-in-start), 1183681)
    
*   Scripting: Fixed an issue with custom editors not working when adding non-editor only assembly definition, unless the user reimports all assets. ([1172669](https://issuetracker.unity3d.com/issues/creating-assembly-definition-files-makes-the-editor-not-pick-up-custom-inspectors-until-restart), 1185373)
    
*   Scripting: Fixed the functionality of FatalError and AccessViolation ForcedCrashCategory's on POSIX platforms. ([1142726](https://issuetracker.unity3d.com/issues/application-dot-forcecrash-slash-utils-dot-forcecrash-not-all-forcedcrashcategories-produce-a-crash), 1172146)
    
*   Shaders: Added new surface shader pragma "nocolormask" to prevent auto-generating ColorMask. This way users can override the ColorMask with their own. ([1174789](https://issuetracker.unity3d.com/issues/unable-to-override-colormask-in-a-surface-shader-with-an-alpha-pragma-directive), 1180497)
    
*   UI: Fixed and issue wiht UI Sliders on secondary screens which do not respond correctly when using Multiple Displays. ([1146233](https://issuetracker.unity3d.com/issues/ui-sliders-on-secondary-screens-do-not-respond-correctly-when-using-multiple-displays), 1183706)
    
*   UI Elements: Fixed and exception thrown when using UIE Debugger to toggle visibility of a root visual element of a panel. ([1179878](https://issuetracker.unity3d.com/issues/ui-element-debugger-invalidoperationexception-stack-empty-error-is-thrown-on-changing-windows-panel-visibility-mode-to-hidden), 1185206)
    
*   Video: Fix and issue where Video Clip fails to upload to Cache Server when upgrading an old project to a newer version of Unity. ([1087082](https://issuetracker.unity3d.com/issues/video-clip-fails-to-upload-to-cache-server-when-upgrading-an-old-project-to-a-newer-version-of-unity), 1172065)
    
*   Windows: Fixed an issue with second monitor inheriting the resolution of the main display during game play. ([1159209](https://issuetracker.unity3d.com/issues/second-display-inherits-first-displays-resolution-when-loading-second-display-on-a-smaller-resolution-monitor), 1184950)
    
*   XR: Fixed a crash on devices using ARcore while multithreaded rendering is activated. (1158392, 1170668)
    
*   XR: Fixed a instability issues with Depth based LSR for HoloLens V1 devices. ([1174865](https://issuetracker.unity3d.com/issues/hololens-holograms-are-jittering-since-unity-2018), 1182448)
    

#### System Requirements

##### For development

**OS**: Windows 7 SP1+, 8, 10, 64-bit versions only; macOS 10.12+. (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 10.12.6 and Xcode 9.4 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 10.12+, Ubuntu 12.04+, SteamOS+
    *   Graphics card with DX10 (shader model 4.0) capabilities.
    *   CPU: SSE2 instruction set support.
*   iOS player requires iOS 9.0 or higher.
    
*   Android: OS 4.1 or later; ARMv7 CPU with NEON support or Atom CPU; 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