Unity 2018.4.23

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Known Issues in 2018.4.23f1

  • Animation: Animator.Update CPU time spikes when multiple animations are playing (1184690)

  • Graphics - General: 'task.rasterData.vertexBuffer == NULL' errors when using a Particle System (1226357)

  • OpenGL: Crash on BufferManagerGLES::AcquireBuffer when in Play Mode (1230566)

  • 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)

  • Shuriken: Crash on CreateDirect3D11SurfaceFromDXGISurface when calling DrawRenderer with a Trail Renderer (1216216)

  • 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.

2018.4.23f1 Release Notes


  • Android: Fixed an issue where Android keyboard not reporting LostFocus state correctly. (1229827)

  • Asset Import: Changed ProcessAssetBundleEntries() to batch load assets using PersistenceManager rather than loading individually using PPTRs. (1184551)

  • Asset Import: Fixed an issue where shadows appear segmented at specific angles when using physical camera with a large difference between sensor aspect ratio and screen aspect ratio. (1211431)

  • Asset Import: Fixed an issue where TextureImporter was dirtied when creating a preset. (1242249)

  • Asset Import: Texture Importer builds all targets before first enable. (1231227)

  • Asset Pipeline: Fixed a sorting issue that was causing indeterminism in Content Update Pipeline. (1197035)

  • Editor: Fixed an issue where smart rounding was causing problems with large scale values with the Rect tool. (1225799)

  • Editor: Fixed an issue where SyntaxTree namespace cannot be referenced. (1205800)

  • Graphics: Fixed a memory leak when disabling texture mip streaming (after enabled). (1227997)

  • Graphics: Fixed a race condition when using Dynamic Batching and Graphics Jobs together. (1221653)

  • Graphics: Fixes an issue where graphics settings were written to boot.config incorrectly. (1236936)

  • Physics: Fixed an issue where having a cloth as part of a prefab would endlessly attempt to update the prefab. (1195095)

  • Physics: Fixed an issue with cloth where it would corrupt transform changed state. (1187252)

  • Prefabs: Fixed a slow scene deserialization, when scene contains broken prefab instances with many duplicate overrides. (1228147)

  • Prefabs: Fixed an issue where the Hierarchy window Create ([+]) dropdown menu item "Create Empty Child" would, in Prefab Mode, place the created child under the Prefab root rather than under the selected object. (1185434)

  • Profiler: Fixed inability to select reoccurring samples in Raw Hierarchy. (1093368)

  • Scripting: Fixed a batch mode issue, where a repeating or infinite loop coroutine does not resume execution after a period of time. (1201708)

  • Security: Fixed UNET vulnerabilities. (CVE-2020-12630) (CVE-2020-12631)

  • Video: Fixed an issue where video-heavy project does not get successfully imported when launching the project in batchmode. (1172957)


  • Shaders: UNITY_OLD_PREPROCESSOR macro is now defined for all shader stages except for ray tracing.

Third Party Notices

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