Download Unity 2021 2021.1.25f1

Improvements
- 2D: Cache internal reflection to speed up Sprite editing data access.
- Graphics: Warnings for non-native compressed formats with decompressor support are now muted in the editor. (1329157)
- Package: Update Addressables to 1.18.6 and SBP to 1.19.2

Fixes
- 2D: Fixed an issue where the Sprite Editor Window was disabled when readonly assets were selected. (1364044)
- Animation: Fixed unexpected behaviours when having negative parameterized time in a motion state. (1332880)
- Asset Pipeline: Fixed an issue where the Editor crashed while entering play mode with an AssetImporter displayed in the Inspector window. (1353925)
- Editor: Fixed an issue where there was not a prompt to save changes if the layout had changed. (1318376)
- Editor: Fixed an issue where Time.unscaledTime and Time.fixedUnscaledTime did not update when stepping through frames. (1294730, 1360931)
- Editor: Fixed an issue with Multiple "Failed to insert item" warnings being logged when the amount of inserted items exceeds 1000. (1343433)
- Editor: If Adb is not able to make the file editable, we make it writable using OS function. (1353760)
- GI: Fixed sky ambient probe and skybox reflection probe issue when reloading a scene in playmode. (1331427)
- GI: Prevent tetrahedralization errors by removing duplicate data from additive probesets. If anything is left, append the rest. (1263524)
- Graphics: Fixed a sporadic crash when closing BuildSettings (and maybe other) windows when using Editor with Vulkan. (1362844)
- Graphics: Fixed an issue of missing objects when highly static batched scene + SRP Batcher. (1294742)
- Graphics: Fixed an issue where Meshes had incorrect skin weights in builds due to faulty normalization after limiting the number of weights per vertex. (1319068)
- Networking: UnityWebRequest: Fix raw data access in DownloadHandlerAudioClip and DownloadHandlerTexture. (1330209)
- Particles: Fixed a crashes when trying to access fields in an uninitialized external forces module. (1354044)
- Physics: Fixed an issue where modifying the "Rigidbody2D.position" did not temporarily stop interpolation when called during the FixedUpdate callback. (1367721)
- Profiler: Fixed an issue where entering Play Mode with the Game View set to 'Play Maximized' and the Profiler window docked causes errors to be logged to the Console window. (1364443)
- Scene/Game View: Fixed an issue where Hierarchy did not allow drag and drop references to be placed between root objects marked as not editable. (1337512)
- Scripting: Fixed an issue where there were handle exceptions thrown from custom attributes' .ctor. (1321144)
- Serialization: Fixed an issue where reference from a Prefab to a missing asset became valid once asset was added back to project, without a reimport. (1270634)
- Serialization: Keep references to unknown ScriptableObject as "Missing" instead becoming "None" when loading Scene or Prefab. (1328065)
- Services: Fixed an issue where the validation endpoint was been disabled, and the editor incorrectly shows that the user must wait for this validation to succeed. This lead to a lot of confusion from our users. This change simply removes this panel to avoid further confusion. (1210052)
- uGUI: Fixed an issue where a missing shader property warnings was produced when running in batchmode. (1350059)
- Universal Windows Platform: Fixed an issue where symbol file packaging failed when using the 'MasterWithLTCG' build configuration. (1345403)
- Universal Windows Platform: Fixed DevicePortal deployment to handle both .appx and .msix packages. (1269676)
- Windows: Fixed an issue where the player icon was missing from the title after the game was first launched in fullscreen mode and then later changed to windowed mode. (1361016)
- Windows: Removed error.log generation for crash uploads in favor of editor.log and dmp files. (1278602)