### Known Issues in 2021.1.12f1

*   AI: Crash with ComputeTileMeshJob when generating Navmesh ([1329346](https://issuetracker.unity3d.com/issues/crash-with-computetilemeshjob-when-generating-navmesh))
    
*   Animation: \[Performance Regression\] AnimationWindowState:get\_allCurves takes approximately 5000ms to load animation in the Animation window ([1320250](https://issuetracker.unity3d.com/issues/perfomance-regression-animationwindowstate-get-allcurves-takes-approximately-5000ms-to-load-animation-in-the-animation-window))
    
*   Asset Import Pipeline: Infinity loop on importing Assets, when building appx package via MRTK build window ([1339823](https://issuetracker.unity3d.com/issues/infinity-loop-on-importing-assets-when-building-appx-package-via-mrtk-build-window))
    
*   Global Illumination: Reflection probes must be rebaked twice to update when using "Generate Lighting" button ([1334283](https://issuetracker.unity3d.com/issues/reflection-probes-must-be-rebaked-twice-to-update-when-using-generate-lighting-button))
    
*   Global Illumination: \[GPUPLM\] Crash in RadeonRaysMeshManager::RemoveGeometry while baking Terrain game object with 4k lightmaps on certain GPU ([1255993](https://issuetracker.unity3d.com/issues/global-illumination-editor-crashes-while-baking-terrain-game-object-using-progressive-gpu-lightmapper))
    
*   IL2CPP: Build fails when using a combination of messages, SyncVars and SyncList in a project ([1328966](https://issuetracker.unity3d.com/issues/il2cpp-build-fails-when-using-a-combination-of-messages-syncvars-and-synclist-in-a-project))
    
*   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: \[Android\] App stops due to OnPixelCopyFinishedListener not being supported on devices with lower than 24 SDK ([1331290](https://issuetracker.unity3d.com/issues/app-stops-due-to-onpixelcopyfinishedlistener-not-being-supported-on-devices-with-lower-than-24-sdk))
    
*   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))
    
*   OpenGL: SRP Batcher not working with OpenGL APIs when the project is built ([1331098](https://issuetracker.unity3d.com/issues/srp-batcher-not-working-with-opengl-apis-when-the-project-is-built))
    
*   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))
    
*   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))
    
*   Scene Management: UnassignedReferenceExeptions with unitypackage when upgrading to 2021.1.2f1 ([1341523](https://issuetracker.unity3d.com/issues/unassignedreferenceexeptions-with-unitypackage-when-upgrading-to-2021-dot-1-2f1))
    
*   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: DomainReloadTests performance tests have regressed due to removal of built-in support for Visual Studio as a code editor ([1336648](https://issuetracker.unity3d.com/issues/domainreloadtests-performance-tests-have-regressed-due-to-removal-of-built-in-support-for-visual-studio-as-a-code-editor))
    
*   Scripting: Increased Script Assembly reload time ([1323490](https://issuetracker.unity3d.com/issues/increased-reload-time))
    
*   Serialization: Crash in SerializedProperty::IsValid when reordering a SerializedProperty list ([1320319](https://issuetracker.unity3d.com/issues/crash-in-serializedproperty-isvalid-when-reordering-a-serializedproperty-list))
    
*   Terrain: Terrain Lit Opacity as Density option causes alpha'd areas on the 5th layer or greater to appear with artifacts ([1283124](https://issuetracker.unity3d.com/issues/terrain-lit-opacity-as-density-option-causes-alphad-areas-on-the-5th-layer-or-greater-to-appear-with-artifacts))
    
*   Vulkan: Linux Editor using Vulkan crashes at " GfxDeviceVK::EnsureValidBackbuffer" when showing tooltips for ProBuilder buttons ([1335846](https://issuetracker.unity3d.com/issues/linux-editor-using-vulkan-crashes-at-gfxdevicevk-ensurevalidbackbuffer-when-showing-tooltips-for-probuilder-buttons))
    
*   WebGL: \[iOS\] Video is not playing ([1288692](https://issuetracker.unity3d.com/issues/webgl-ios-video-is-not-playing-on-ios))
    
*   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))
    

### 2021.1.12f1 Release Notes

#### Improvements

*   Physics: Added units of measurement to the Articulation Body properties in the scripting documentation.

#### Fixes

*   2D: Fixed vertices winding order for square polygonal Sprite generation. ([1289069](https://issuetracker.unity3d.com/issues/the-square-sprite-is-facing-the-opposite-direction-when-a-standard-material-is-applied-to-it))
    
*   AI: Fixed NavMeshObstacle inspector when viewed in non-wide mode. ([1330842](https://issuetracker.unity3d.com/issues/labels-overlap-in-navmeshobstacle-inspector-when-shape-is-set-to-box-and-inspectors-width-is-small))
    
*   AI: Selecting the Navigation Window causes the Editor to Crash. (1330235)
    
*   Animation: Fixed an issue where Animations played in Timeline with offsets would play incorrectly in some Avatar/Humanoid setups. ([1295759](https://issuetracker.unity3d.com/issues/gameobject-position-changes-during-transitions-in-timeline-preview))
    
*   Asset Import: Fixed issue where textures can't be extracted when the FBX file is located in a writeable package. ([1329339](https://issuetracker.unity3d.com/issues/textures-are-not-extracted-with-extract-textures-button-when-trying-to-extract-in-the-packages-folder))
    
*   Audio: Added mixer groups or snapshots would trigger a "generated inconsistent result" asset import warning in the console. ([1319518](https://issuetracker.unity3d.com/issues/audio-inconsistent-result-for-asset-warning-appears-on-adding-creating-new-groups-or-snapshots))
    
*   Graphics: Fixed an issue that caused MSAA to not work correctly in URP on Oculus Quest. ([1327973](https://issuetracker.unity3d.com/issues/xr-urp-quest-msaa-doesnt-get-applied-when-using-opaque-textures))
    
*   Graphics: Fixed batching for instancing when all objects are lit by the same (<8) lights. ([1313977](https://issuetracker.unity3d.com/issues/xr-quest-urp-increasing-the-amount-of-real-time-lights-breaks-gpu-instancing))
    
*   Graphics: Fixed camera velocity property for SRPs. ([1302527](https://issuetracker.unity3d.com/issues/urp-particles-are-not-stretched-according-relative-to-camera-when-particle-system-render-mode-is-set-to-stretched-billboard))
    
*   Graphics: Fixed Editor crashing sometimes when running HDRP DXR tests. (1338912)
    
*   Graphics: Resolved an issue where setting a camera's target texture to null would sometimes increase camera stack size and reduce performance. ([1299403](https://issuetracker.unity3d.com/issues/setting-camera-dot-targettexture-equals-null-increases-camerastack-stackcount))
    
*   HDRP: Fixed for wrong cached area light initialization.
    
*   License: Fixed license check failure shows error dialog and opens Hub. (1337329)
    
*   Package Manager: Fixed bug where absolute path was used in the manifest instead of relative path for local packages. ([1327815](https://issuetracker.unity3d.com/issues/absolute-paths-are-being-set-for-external-packages-added-via-tarball))
    
*   Shadergraph: Fixed a bug in ShaderGraph where sticky notes couldn't be copied and pasted. ([1221042](https://issuetracker.unity3d.com/issues/shader-graph-sticky-notes-can-not-be-copied-and-pasted))
    
*   Shadergraph: Fixed a ShaderGraph issue where unused blocks get removed on edge replacement. ([1334341](https://issuetracker.unity3d.com/issues/node-in-the-block-node-is-deleted-when-reconnecting-a-node-to-it-while-automatically-add-or-remove-blocks-is-enabled))
    
*   Shadergraph: Fixed an issue where nested subgraphs with identical SamplerState property settings could cause compile failures. (1336089)
    
*   Shadergraph: Fixed an issue where SamplerState properties could not be renamed after creation. (1336126)
    
*   Shadergraph: Fixed SubGraph SamplerState property defaults not being respected. (1336119)
    
*   Shaders: Fixed incorrect struct reflection on GL and GLES backends when using multiple nested structs. (1322153)
    
*   UI Toolkit: Fixed ListView item selection through PointerMoveEvent, for example when holding right-click down while clicking. (1275295)
    
*   URP: Fixed a performance issue in Hololens when using renderer with custom render passes.
    
*   URP: Fixed an issue where Particle Lit shader had an incorrect fallback shader. (1312459)
    
*   URP: Fixed an issue where SMAA did not work for OpenGL. ([1318214](https://issuetracker.unity3d.com/issues/urp-there-is-no-effect-when-using-smaa-in-urp-with-opengles-api))