### Known Issues in 2021.1.28f1

*   Android: Sometimes text is not rendered when using OpengLES3 on a Xiaomi Redmi9A device. ([1347186](https://issuetracker.unity3d.com/issues/android-the-text-is-missing-on-a-xiaomi-redmi9a-device))
    
*   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))
    
*   Global Illumination: Crash while sculpting Terrain and Baking Lightmaps ([1266511](https://issuetracker.unity3d.com/issues/crash-while-sculpting-terrain))
    
*   Global Illumination: Scene is brighter in Standalone player if it was open in the Editor at build time ([1375015](https://issuetracker.unity3d.com/issues/scene-is-brighter-in-standalone-player-if-it-was-open-in-the-editor-at-build-time))
    
*   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))
    
*   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: NullReferenceException causes freeze when thrown in the Player ([1364311](https://issuetracker.unity3d.com/issues/nullreferenceexception-causes-freeze-when-thrown-in-the-built-project))
    
*   Scene Management: Instantiated FBX through code throws error after leaving Play Mode ([1363573](https://issuetracker.unity3d.com/issues/instantiated-fbx-through-code-throws-error-after-leaving-play-mode))
    
*   Scripting: Only some assemblies fail to be loaded when assembly name does not match the file name ([1345099](https://issuetracker.unity3d.com/issues/only-some-assemblies-fail-to-be-loaded-when-assembly-name-does-not-match-the-file-name))
    
*   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))
    
*   uGUI: Poor performance when loading or unloading a large Scene ([1375646](https://issuetracker.unity3d.com/issues/poor-performance-when-loading-or-unloading-a-large-scene-1))
    
*   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))
    
*   Window Management: Broken layout stops panels located in the top left corner of the Editor from rendering in the Karting Microgame project ([1367783](https://issuetracker.unity3d.com/issues/broken-layout-stops-panels-located-in-the-top-left-corner-of-the-editor-from-rendering-in-the-karting-microgame-project))
    
*   XR SDK: \[XR\]\[Linux\] 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))
    

### 2021.1.28f1 Release Notes

#### Improvements

*   iOS: Added support for iPhones, iPads and Apple TV released in 2021. ([1367775](https://issuetracker.unity3d.com/issues/iphone-13-information-is-not-included-in-the-devicesettings-dot-mm-file))
    
*   Package: Update Addressables package to version 1.18.19. Please refer to the package changelog online here:  
    https://docs.unity3d.com/Packages/com.unity.addressables@1.18/changelog/CHANGELOG.html
    
*   Package: Updated Cinemachine package to version 2.7.9. Please refer to the package changelog online here:  
    https://docs.unity3d.com/Packages/com.unity.cinemachine@2.7/changelog/CHANGELOG.html
    
*   Package: Updated the Timeline package version to 1.5.7. Please refer to the package changelog online here:  
    https://docs.unity3d.com/Packages/com.unity.timeline@1.5/changelog/CHANGELOG.html
    
*   Search: Many search UI and indexing improvements.
    

#### API Changes

*   Apple TV: Added: Identifier for 2nd generation Apple TV 4K.
    
*   Apple TV: Changed: Identifiers for Apple TV HD and first generation Apple TV 4K.
    
*   iOS: Added: Identifiers for all iPhone 13 models, 6th generation iPad Minis, 9th generation iPads.
    
*   Shaders: Added: Ability to query preprocessed shader data for a given variant. ([1364378](https://issuetracker.unity3d.com/issues/no-way-to-get-preprocessed-data-using-pass-dot-compilevariant))
    

#### Changes

*   Shaders: Exceptions in IPreprocessShaders will now fail the build. (1357383)

#### Fixes

*   Android: Fixed an issue with a screen safe area values at startup. ([1327752](https://issuetracker.unity3d.com/issues/safearea-when-device-is-held-in-portrait-app-is-running-in-portrait-upside-down-windowed-mode-safearea-values-are-incorrect))
    
*   Animation: Fixed an issue where an assert was triggered upon rebuilding an animation legacy component. ([1330001](https://issuetracker.unity3d.com/issues/assertion-failed-on-expression-m-curves-when-playing-animation-after-reenabling-object))
    
*   DX12: Fixed a DX12 Standalone Player crash during startup when using 32-bit player support. (1315964)
    
*   Editor: Fixed a jumping scroll-bar issue when working with arrays. ([1362327](https://issuetracker.unity3d.com/issues/scrolling-is-jumping-when-scrolling-in-the-input-manager))
    
*   Editor: Fixed an issue where the IMGUI buttons did not work in Device Simulator when using the new Input System. ([1333953](https://issuetracker.unity3d.com/issues/imgui-button-presses-dont-get-registered-while-in-a-device-simulator))
    
*   Editor: Fixed an issue where the Inspector AnimationCurve field was trying to show both the context menu and the curve editor when right-clicked. ([1312594](https://issuetracker.unity3d.com/issues/the-copy-slash-paste-menu-gets-opened-on-top-of-the-curve-window-when-right-clicking-on-the-animationcurve-field-in-the-inspector))
    
*   Editor: Fixed an issue where the windows editor sometimes got into a "script assemblies are locked" state after a modal dialog from a C# script was invoked. ([1367358](https://issuetracker.unity3d.com/issues/windows-asemblies-get-locked-when-trying-to-recompile-after-opening-and-closing-openfolderpanel-window))
    
*   Graphics: Fixed a rare crash in shadow rendering. ([1350950](https://issuetracker.unity3d.com/issues/crash-on-keywords-keywordremap-remap-related-to-keyword-remapping))
    
*   Graphics: Fixed an incorrect texture settings for externally created textures. ([1358700](https://issuetracker.unity3d.com/issues/texture-filter-mode-set-on-external-native-texture-is-ignored))
    
*   IL2CPP: Fixed an isse where the debugger did not grow the frame capacity on-demand. ([1360149](https://issuetracker.unity3d.com/issues/player-crashes-when-running-a-recursive-function-with-script-debugging-enabled))
    
*   IL2CPP: Fixed incorrect metadata section size checks. (1370667)
    
*   Input System: Fixed incorrect Windows input event timestamps. ([1284586](https://issuetracker.unity3d.com/issues/inputinteractioncontext-dot-timerhasexpired-property-breaks-in-editor-after-pc-left-sleep-mode))
    
*   iOS: Fixed an issue where dark mode native mobile input's background from going transparent when was empty. ([1367091](https://issuetracker.unity3d.com/issues/ios-multi-line-mobile-input-fields-show-transparent-background-when-dark-mode-is-enabled-and-no-text-is-in-the-field))
    
*   Physics: Fixed an issue where the Articulation Drive did not affecting the joint in Articulation Body when the collider volume was very small. ([1330968](https://issuetracker.unity3d.com/issues/articulation-body-doesnt-work-when-it-is-the-last-one-in-the-chain-and-when-collider-volume-is-small))
    
*   Profiler: Fixed a Timeline view's display of surrounding context frames issue when the recorded frame count exceeds the amount specified in Preferences/Analysis/Profiler/Frame Count. ([1367470](https://issuetracker.unity3d.com/issues/timeline-view-looses-context-frames-when-frames-go-out-of-frame-count-bounds))
    
*   Search: Fixed a NullReferenceException that was 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))
    
*   Search: Fixed a search index issue for medium and large projects. (1362623)
    
*   Search: Fixed an issue where Scene or Prefab did not open when using Alt + Enter shortcut. ([1362526](https://issuetracker.unity3d.com/issues/quick-search-package-3-dot-0-can-not-open-prefab-slash-scene-on-alt-plus-enter))
    
*   Shaders: Fixed an issue where Compile and show code button were failing to write the file if the size was over 2 GB. ([1357761](https://issuetracker.unity3d.com/issues/preprocessed-lit-dot-shader-file-stops-mid-line-when-file-size-is-near-or-more-than-2gb))
    
*   Shaders: Fixed an issue where uintBitsToFloat was not doing a conversion from bool argument to uint. ([1334240](https://issuetracker.unity3d.com/issues/shaders-fail-compilation-on-vulkan-slash-gl-when-material-override-is-set-to-albedo))
    
*   UI Toolkit: Fixed an issue where stylesheets were added to a UIBuilder document were not cleared after a new document was created. ([1363722](https://issuetracker.unity3d.com/issues/ui-builder-applies-previously-loaded-uss-to-a-new-uxml))
    
*   UI Toolkit: Fixed an issue where unmodified files are saved to disk. ([1355591](https://issuetracker.unity3d.com/issues/the-uxml-and-all-open-uss-files-get-marked-as-dirty-after-modifying-only-one-file))
    
*   Video: Fixed a crash that occurred while importing unsupported video frame size in the Editor. ([1340340](https://issuetracker.unity3d.com/issues/crash-on-windowsvideomedia-stepallstreams-when-reimporting-a-m4v-file))
    
*   Video: Fixed errors that were spammed in the Console upon opening an imported video in the Inspector tab when Target Platform was set to UWP. ([1357597](https://issuetracker.unity3d.com/issues/errors-are-spammed-in-the-console-upon-opening-imported-video-in-the-inspector-tab-when-target-platform-is-set-to-uwp))
    
*   WebGL: Fixed a crash on Oculus Browser when the EXT\_multisampled\_render\_to\_texture extension was enabled. ([1370782](https://issuetracker.unity3d.com/issues/webgl-webgl-broken-with-oculus-browser-because-of-glgetprocaddress))
    
*   XR: Fixed a soft particles shaders for XR single-pass issue. ([1332105](https://issuetracker.unity3d.com/issues/xr-sdk-line-renderer-collides-the-controller-when-single-pass-rendering-mode-is-used))