### Known Issues in 2018.4.22f1

*   Animation: Animator.Update CPU time spikes when multiple animations are playing ([1184690](https://issuetracker.unity3d.com/issues/animator-dot-update-cpu-time-spikes-when-multiple-animations-are-playing))
    
*   Graphics - General: 'task.rasterData.vertexBuffer == NULL' errors when using a Particle System ([1226357](https://issuetracker.unity3d.com/issues/task-dot-rasterdata-dot-vertexbuffer-equals-equals-null-errors-when-using-a-particle-system))
    
*   Package Manager: Immutable packages altered by the API Updater are reverted to their original state when packages are resolved, which can lead to slower import performance in that context.
    
*   Scene Management: Prefab Variant Transform fileId changes ([1238280](https://issuetracker.unity3d.com/issues/prefab-variant-transform-fileid-changes))
    
*   Scene Management: Unity Editor freezes/crashes when opening a specific Scene ([1228147](https://issuetracker.unity3d.com/issues/unity-editor-freezes-slash-crashes-when-opening-a-specific-scene))
    
*   Shuriken: Crash on CreateDirect3D11SurfaceFromDXGISurface when calling DrawRenderer with a Trail Renderer ([1216216](https://issuetracker.unity3d.com/issues/crash-on-createdirect3d11surfacefromdxgisurface-when-calling-drawrenderer-with-a-trail-renderer))
    
*   macOS: If the Android Tools are not installed through the Hub, macOS 10.15 (Catalina) default security settings will prevent the Android NDK binaries being executed. These settings have to be changed or a signed Android NDK (r16b) will be needed to build Android. More information here: https://developer.android.com/ndk/downloads/older\_releases.
    

### 2018.4.22f1 Release Notes

#### Fixes

*   Android: Fixed a crash after executing Application.Quit() when using IL2CPP.
*   Build Pipeline: Fixed an issue which was preventing mesh compression on iphone when building with the scriptable build pipeline. ([1222846](https://issuetracker.unity3d.com/issues/scriptablebuildpipeline-static-batching-does-not-work-on-ios-or-android))
    
*   Graphics: Removed some unnecessary warnings. (1193536)
    
*   iOS: Fixed an issue where a custom storyboard might not be found at runtime. ([1225171](https://issuetracker.unity3d.com/issues/2018-dot-4-a-grey-screen-fades-in-between-the-storyboard-launch-screen-and-the-first-unity-scene))
    
*   MacOS: Fixed an issue that prevented the Game Center UI from showing on macOS. ([1215479](https://issuetracker.unity3d.com/issues/macos-calling-social-dot-showachievementsui-does-nothing-on-macos-standalone))
    
*   Profiler: Fixed an Editor crash when loading corrupted profiler data. ([1131782](https://issuetracker.unity3d.com/issues/editor-crashes-when-loading-profiler-file-with-memcpy-stacktrace))
    
*   Universal Windows Platform: Enabled the Lightmap Encoding options for UWP player settings. ([1225842](https://issuetracker.unity3d.com/issues/lightmap-encoding-options-are-not-present-in-uwp))