### Known Issues in 2021.1.20f1

*   \--: NullReferenceException is thrown when typing in the Hierarchy window search bar ([1360676](https://issuetracker.unity3d.com/issues/nullreferenceexception-is-thrown-when-typing-in-the-hierarchy-window-search-bar))
    
*   Ads: \[Android\] Unity Ad return app to Lock screen ([1281041](https://issuetracker.unity3d.com/issues/android-unity-ad-return-app-to-lock-screen))
    
*   Asset Import Pipeline: Editor crashes with out of memory while importing a lot of assets (mostly textures) at once, on Windows/DX11 ([1324536](https://issuetracker.unity3d.com/issues/editor-crashes-with-system-out-of-memory-error-when-importing-size-heavy-textures))
    
*   Asset Importers: Editor crashes on UnityEditor.Unsupported:IsDestroyScriptableObject when applying changes to a custom asset ([1353925](https://issuetracker.unity3d.com/issues/editor-crashes-on-unityeditor-dot-unsupported-isdestroyscriptableobject-when-applying-changes-to-a-custom-asset))
    
*   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 AudioCustomFilter::GetOrCreateDSP when recompiling scripts while in Play Mode ([1354002](https://issuetracker.unity3d.com/issues/crash-on-audiocustomfilter-getorcreatedsp-when-recompiling-scripts-while-in-play-mode))
    
*   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: \[Enlighten\] Fatal Error when closing the Editor while Generating Lighting ([1354238](https://issuetracker.unity3d.com/issues/fatal-error-when-closing-the-editor-while-generating-lighting))
    
*   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))
    
*   Input: Input.GetKey does not trigger when the mouse cursor is outside the Game window ([1358134](https://issuetracker.unity3d.com/issues/input-dot-getkey-does-not-trigger-when-the-mouse-cursor-is-outside-the-game-window))
    
*   Linux: Crash on DisableSubMenu when double clicking to close a context menu ([1347655](https://issuetracker.unity3d.com/issues/linux-crash-on-disablesubmenu-when-double-clicking-to-close-a-context-menu))
    
*   Linux: Menu bar "Assets" submenu items are disabled after visualizing an asset's context menu in Project view ([1346205](https://issuetracker.unity3d.com/issues/menu-bar-assets-submenu-items-are-disabled-after-visualizing-ans-assets-context-menu-in-project-view))
    
*   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))
    
*   Mono: \[Mono Upgrade\] CommandBuffer native plugin events hang in the Editor ([1308216](https://issuetracker.unity3d.com/issues/commandbuffer-native-plugin-events-hang-in-the-editor))
    
*   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))
    
*   Quality of Life: Crash on GUIView::DoPaint when selecting color with a color picker ([1355078](https://issuetracker.unity3d.com/issues/crash-on-guiview-dopaint-when-selecting-color-with-a-color-picker))
    
*   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: Poor performance when loading or unloading a large Scene ([1360901](https://issuetracker.unity3d.com/issues/poor-performance-when-loading-or-unloading-a-large-scene))
    
*   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: Error CS8035 is thrown on opening a project when using rulesets ([1349517](https://issuetracker.unity3d.com/issues/error-cs8035))
    
*   Scripting: Increased Script Assembly reload time ([1323490](https://issuetracker.unity3d.com/issues/increased-reload-time))
    
*   Scripting: Performance degradation when activating or deactivating uGUI GameObject ([1348763](https://issuetracker.unity3d.com/issues/performance-degradation-when-activating-or-deactivating-ugui-gameobject))
    
*   Scripting: Unity does not execute code weavers when the project is opened for the first time ([1350116](https://issuetracker.unity3d.com/issues/unity-does-not-execute-code-weavers-when-its-opened-for-the-first-time))
    
*   Settings Window: \[Mobile Notifications\] Editor crashes when clicking on any category while Mobile Notifications pane is open ([1361351](https://issuetracker.unity3d.com/issues/mobile-notifications-editor-crashes-when-clicking-on-any-category-while-mobile-notifications-pane-is-open))
    
*   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: \[Editor\] 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))
    
*   XR: \[Linux\] Scene View doesn't render when opening new AR or VR Template project or pressing "Show Tutorials" ([1362435](https://issuetracker.unity3d.com/issues/xr-linux-scene-view-doesnt-render-when-opening-new-ar-or-vr-template-project-or-pressing-show-tutorials))
    

### 2021.1.20f1 Release Notes

#### Improvements

*   Scripting: Ammend CompilationPipeline.compilationFinished to include that it's currently not possible to build a player from a callback. ([1338334](https://issuetracker.unity3d.com/issues/error-appears-in-the-console-when-triggering-a-build-from-the-compilationfinished-callback))

#### Changes

*   Editor: Updated com.unity.cinemachine to 2.7.8

#### Fixes

*   Android: Fixed android:exported atribute not set to true for Uniy library activity when target API level is 31 or higher. (1356676)
    
*   Android: Fixed cameras with depth only clear flickering or not rendering on Adreno devices. ([1314872](https://issuetracker.unity3d.com/issues/opengles3-mobile-objects-with-shaders-flickering-when-using-urp-plus-camera-stacking))
    
*   Asset Pipeline: Fixed issue where some meshes imported from FBX are missing the first UV channel. ([1342131](https://issuetracker.unity3d.com/issues/fbx-model-has-broken-uv-mapping-when-the-imported-model-is-duplicated-or-using-a-newer-unity-version))
    
*   Asset Pipeline: Improved UI performance when generating many asset previews. (1340118)
    
*   Audio: Fixed missing domain unload callback and excessive number of registrations for each instantiation of a custom DSP that caused an "Callback registration failed. Increase kMaxCallback." error. (1306511)
    
*   GI: Fixed baking on non-primary GPU on machines using a mix of NVIDIA and AMD GPUs. ([1314991](https://issuetracker.unity3d.com/issues/gpu-plm-lightmapper-falls-back-to-cpu-plm-after-changing-gpu-baking-device))
    
*   GI: Fixed reflection probes weight on flat objects. ([1233991](https://issuetracker.unity3d.com/issues/weights-sum-of-reflection-probes-affecting-the-gameobject-gets-over-one-when-one-of-a-reflection-probes-is-inside-another-one))
    
*   GI: LightProbes.needsRetetrahedralization doesn't get invoked in IL2CPP builds. ([1338514](https://issuetracker.unity3d.com/issues/lightprobes-dot-needsretetrahedralization-doesnt-get-invoked-in-il2cpp-builds))
    
*   Graphics: Fixed bilinear rescale on 32k wide or high images such that the image no longer flips around. ([1340329](https://issuetracker.unity3d.com/issues/image-will-appear-flipped-when-using-the-bilinear-resize-algorithm))
    
*   Graphics: Fixed SRPBatcher not increasing CBuffer size when material shader is changed. ([1353368](https://issuetracker.unity3d.com/issues/srpbatcher-not-increasing-cbuffer-size-when-material-shader-is-changed))
    
*   Input System: Fixed Y coordinate being flipped in Windows Player when WarpCursorPosition in Input System. ([1355722](https://issuetracker.unity3d.com/issues/mouse-cursor-y-position-inverted-when-using-mouse-dot-current-dot-warpcursorposition))
    
*   iOS: Fixed 'end Encoding' crash when force closing iOS application. ([1329593](https://issuetracker.unity3d.com/issues/ios-crash-on-mtlreportfailure-dot-cold-dot-1-due-to-a-missing-endencoding-call-on-exiting-the-application))
    
*   iOS: Fixed Mute Other Audio Sources not muting background audio on a device when toggled on when Unity audio is enabled. ([1335093](https://issuetracker.unity3d.com/issues/ios-mute-other-audio-sources-is-not-muting-background-audio-on-a-device-when-toggled-on))
    
*   iOS: Fixed video freezing or app crashing when resuming the app from suspension or unlocking the device. ([1297877](https://issuetracker.unity3d.com/issues/ios-14-video-freezes-when-resuming-the-app-from-suspension-or-unlocking-the-device))
    
*   N/A (internal): Fixed scene-with-scrollbar-horizontal-delete-doesnt-dirty-on-save test instability by calling Focus(). (1356609)
    
*   Package Manager: Fixed "Load all" not working in "My Assets". (1287445)
    
*   Package Manager: Fixed the issue where the selection in the list is broken and the wrong package appears as selected in My Assets. (1343197)
    
*   Package Manager: Fixed the issue where there is a noticeable lag when selecting an asset in the PackageList when navigating a large number of assets in My Assets. (1343193)
    
*   Prefabs: Fixed unpacked prefabs added under a prefab instance being removed when undoing any change made to outermost root. ([1339775](https://issuetracker.unity3d.com/issues/unpacked-prefabs-added-to-a-prefab-variant-in-prefab-mode-are-removed-when-undoing-any-change-made-to-main-prefab))
    
*   Scripting: Fixed an issue when opening a project using rulesets, Error CS8035 is no longer thrown in the console. ([1349517](https://issuetracker.unity3d.com/issues/error-cs8035))
    
*   Services: Analytics no longer auto-activates on new project link.
    
*   Services: Updated analytics package. Constantly repopulating a list of strings was causing the inspector panel for the analytics tracker to spam autosave in some cases. ([1150985](https://issuetracker.unity3d.com/issues/a-loop-of-prefab-autosave-begins-when-adding-a-parameter-to-analytics-event-tracker-in-prefab-editing-mode))
    
*   Universal Windows Platform: Fixed Alt + Enter not entering/leaving fullscreen mode. ([1304865](https://issuetracker.unity3d.com/issues/player-window-can-not-be-maximised-after-being-taken-out-of-fullscreen-with-alt-plus-enter))
    
*   Windows: Fixed the new input system reporting incorrect keyboard key display names when using certain non-english keyboard layouts. ([1337684](https://issuetracker.unity3d.com/issues/inputsystem-inputaction-dot-getbindingdisplaystring-does-not-correctly-map-keys-after-changing-system-language))