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Known Issues in 2021.2.17f1
Asset - Database: Texture size increased on first build when 'Compress Textures/Assets on Import' is enabled (1397965)
Asset Bundles: Asset Bundle size incrementally increases when updating the Unity Editor and rebuilding the Asset Bundle (1391542)
DirectX11: Crash on GfxDeviceD3D11Base::ResolveDepthIntoTexture when opening the project (1408785)
DOTS: "IndexOutOfRangeException" errors appear when entering Play Mode if using "AsDeferredJobArray" (1395710)
Linux: Player settings and other options are locked after script compilation (1380015)
Metal: Consistent EditorLoop 5-10ms spikes when using Metal API (1378985)
Progressive Lightmapper: [GPU PLM] Crash after enabling Auto at the end of Bake - OpenCLRenderLightmapBuffers.HasBakingBuffers() (1389093)
Progressive Lightmapper: [GPU PLM] Crash due to out of bounds access violation in PowerSampling after enabling auto mode at the end of bake on AMD GPU (1379762)
Scene/Game View: Camera resolution is set to default when opening the Editor (1378321)
Shadows/Lights: Scene is brighter in Standalone player if it was open in the Editor at build time (1375015)
Terrain: Material keyword APIs don't list keywords when using a newly imported SpeedTree (1398133)
uGUI: Prefab is glitchy while editing in Prefab Mode when parent Canvas Render Mode is set to Screen Space - Camera (1394756)
Unity Test Runner: Editor freezes when Running EditMode tests in batchmode (1396512)
Vulkan: [Editor] The Scene's GameObjects textures are seemingly random and change colours depending on the Scene's Camera pos. (1337772)
Vulkan: [HDRP] [Vulkan] Crash on vk::DataBuffer::CreateResource on opening Shader Graph Sample Project with Vulkan API (1225488)
WebGL: WebGL Input System interactions are delayed or played preemptively when the project is built (1405517)
XR SDK: [XR][Linux] Scene View doesn't render when opening new AR or VR Template project or pressing "Show Tutorials" (1362435)
2021.2.17f1 Release Notes
IL2CPP: Optimized out boxing on null checks on nullable types in generic code.
Scripting: Editor will display a warning if trying to open a project with an External Code Editor which was removed. (1401221)
Scripting: Optimized searching for scripts when the assembly name is not supplied, can significantly improve performance entering PlayMode amongst other areas.
Search: Many UI and UX search improvements
Android: Fixed Android il2cpp build when Windows Display Language is set to Turkish. (1408333)
Android: Fixed stack overflow crash on start up when trying to get device IP. (1409651)
Asset Pipeline: Fixed an issue where artifact dependencies might fail to be registered correctly during an import. (1393370)
Asset Pipeline: Fixed an issue where subsequent builds or manually-selected script only builds could result in incorrect code stripping.
Build Pipeline: Fixed an issue where building players would fail on windows if Unity is installed on a different drive than the project folder. (1412356)
Editor: Fixed a missing segments issue in the Bundle Identifier for Apple platforms by replacing invalid characters with hyphens (similar to Xcode's behaviour). (1352216)
Editor: Fixed a missing adb provider for advanced object selector search engine issue. (1398289)
Editor: Fixed a missing search result refresh when executing CTRL+Z to undo last block modifications. (1394732)
Editor: Fixed Player settings becoming invisible after importing new Graphics API on HDRP template. (1406881)
Editor: Use SearchViewState.group to initialize initial results tab when a new search window is created. (1400665)
GI: Fixed an issued caused by out-of-bounds access when light probes had no coefficients. (1394168)
GI: Small lighting settings UI tweaks.
Graphics: Fixed a sporadic crashes when using Vulkan. (1407673)
Graphics: Fixed an issue where crunch compression did not properly handles uncompressed formats (even if not 32-bit RGBA) without flipping color channels or getting data corruption. (1340715)
Graphics: Fixed an issue where EditorUtility.Compress to crunch fail with a crashing when invalid texture sizes were provided. (1331258)
Graphics: Fixed buffer overflow in the RenderPassDescription attachments, causing a crash on Linux. (1386745)
Graphics: Fixed issue with resolution change when using renderFrameInterval. (1355972)
Graphics: Fixed splash screen getting rendered at slightly darker color when drawing it from script and the project uses linear color space. (1369235)
Graphics: Fixed to reduce CPU load in a sample scene when running with Graphics jobs.
IL2CPP: Correct the full generic sharing code generation when a generic parameter has a transitive class constraint. (1396719)
IL2CPP: Fixed an issue where marshaling of delegates with by reference types was not supported when the return type is blittable. (1399978)
IL2CPP: Fixed error with builds where C# comments contained multiple slashes/backslashes separated by whitespace. (1391435)
IL2CPP: Fixed il2cpp.exe crashing on machines that used more than 64 threads. (1389102)
IL2CPP: Fixed issue where the wrong custom attributes would be returned for methods on an array instance. (1403460)
IMGUI: Fixed memory leak when continuously calling Repaint inside OnGUI after GUI.Window (1371866)
iOS: Fixed an issue where .meta files was incldued in build for plugins of .plugin type. (1184957)
iOS: Fixed Screen.safeArea returns incorrect height value when constraining rotation to landscape. (1356217)
Linux: Fixed an Editor crash when mappings for specific controllers were not found. (1329301)
macOS: Fixed a rare crash in GameView pointing to BufferMetal::IsBusy. (1405248)
macOS: Fixed Silicon Editor showing as iOS app in macOS System Information. (1378530)
Mono: Fixed an intermittent "Unexpected mark stack overflow" error. (1391935)
Mono: Fixed generic default interface method crash with Environment.StackTrace. (1365974)
Package Manager: Fixed an issue on Windows where resolving a package could fail if any files were temporarily being used by another process. (1384471)
Package Manager: Fixed an issue where a package download would fail if the download URL had a default port set (i.e.
80for HTTP or
443for HTTPS). (1388256)
Package Manager: Fixed an issue where having package folders without a package manifest in the project's Library folder would fail resolving
Package Manager: Fixed an issue where JSON files encoded using UTF-8 with BOM could not be parsed.
Package Manager: Fixed an issue where package metadata would be fetched even though the locally cached metadata was up-to-date.
Package Manager: Fixed an issue where the
PackageManager.Client.SearchAll()method would fail if the user did not have access permission for one of the packages hosted on the registry. (1381544)
Package Manager: Fixed an issue where
local-tarballdependencies would become unresolved if the source tarball was removed.
Package Manager: Fixed HTTP 5xx errors that could occur when using a proxy server. (1381238)
Package Manager: Fixed UnityPackageManager process leaving dangling IPC socket file after it exited.
Particles: Ensure Trigger Module does not ignore 2D Trigger Colliders. (1364520)
Particles: Fixed flickering when using Mesh GPU Instancing. (1390346)
Prefabs: Fixed memory gets allocated for GC each frame when using PrefabStageUtility.GetPrefabStage(). (1343935)
Profiler: Fixed an issue where Texture2DArrays was not reporting data usage correctly in memory samples. (1354202)
Scene/Game View: Fixed an input field expanding to fit more digits and creating overflow in the overlay. (1361083)
Search: Fixed a search indexer get document lock issue while incremental updating.
Search: Fixed an issue where search engines initialization was not delayed until after user code was compiled.
uGUI: Reentered: is true when quitting a nested UI to go back on a parent UI.
FullyExited: is true when quitting a UI for null or for something outside of its children. (1394226)
UI: Fixed an issue which would cause duplicate UI draw calls to show up in the Framedebugger (1342417)
UI Elements: All elements inside a foldout now have a unique name for easier restyling. (1390941)
Undo System: Fixed an issue where replacing prefabs would cause a crash. (1400170)
Undo System: Fixed an issue where undoing specific tile map additions was not handled. (1407532)
Windows: Fixed player window position being offset from the left side of the screen when running in windowed mode at a resolution that doesn't fully fit inside the display. (1378303)
Windows: Fixed Windows Editor crashing on startup on Windows 7 machines that have the latest version of Visual C++ 2013 redistributable installed. (1361676)
Package changes in 2021.2.17f1