4.21.2 Hotfix Released

The 4.21.2 Hotfix is now live!

Feel free to discuss this release on the 4.21 forum thread.

If you experience a bug with the 4.21.2 Hotfix, please follow the How To Report a Bug Guide

Fixed in 4.21.2
Fixed! UE-66965 Crash when reverting an Animation Modifier that sets an Animation Sequence variable that does not have a default value by Event on Revert
Fixed! UE-66634 [CrashReport] UE4Editor_UnrealEd!FBlueprintEditorUtils::FindBlueprintForGraphChecked() [blueprinteditorutils.cpp:2275]
Fixed! UE-67388 Crash deleting a state machine and then attempting to focus the state machine tab
Fixed! UE-67224 Package fails to save when attempting to replace references in the editor
Fixed! UE-68097 Particle memory can be corrupted leading to a crash
Fixed! UE-67509 Impossible to save assets after change in redirectors
Fixed! UE-67379 GitHub 5343 : update gitignore
Fixed! UE-67390 Source files not rebuilt when headers change
Fixed! UE-66320 Editor crash on re opening a scene containing Step datasmith scene - Assertion failed: Export.ObjectName!=NAME_None || !(Export.ObjectFlags&RF_Public)
Fixed! UE-67195 “Objects named as ““none”” or any other reserved keyword aren’t saved after import”
Fixed! UE-66659 [CrashReport] UE4Editor_Engine!FLevelCollection::RemoveLevel() [world.cpp:258]
Fixed! UE-66658 [CrashReport] UE4Editor_UnrealEd!FBlueprintEditorUtils::IsLevelScriptBlueprint() [blueprinteditorutils.cpp:3260]
Fixed! UE-67414 GitHub 5349 : Update World.cpp
Fixed! UE-67239 GitHub 5334 : Fix: Initialize RcNavMeshOrigin in constructor of FRecastNavMeshGenerator
Fixed! UE-67425 GitHub 5350 : FRecastNavMeshGenerator::RcNavMeshOrigin was not initialized on packaged game without ForceRebuildOnLoad
Fixed! UE-67315 [CrashReport] UE4Editor_UnrealEd!FKismetEditorUtilities::AddComponentsToBlueprint() [kismet2.cpp:1490]
Fixed! UE-68435 GitHub 5450 : UE-68262: Remove StaticMesh == nullptr map check
Fixed! UE-68262 Blueprint inherited from StaticMeshActor will fail to compile if StaticMesh is NULL
Fixed! UE-67900 Child Actor Audio Volume Makes UE4 Crash
Fixed! UE-62491 [CrashReport] UE4Editor_Core!FName::InitInternal_FindOrAddNameEntry() [unrealnames.cpp:818]
Fixed! UE-61971 [CrashReport] UE4Editor_UnrealEd!FKismetDebugUtilities::OnScriptException() [kismetdebugutilities.cpp:211]
Fixed! UE-68108 Crash when executing Rename Asset or Duplicate Asset and other functions in Scripted Actions
Fixed! UE-67621 [CrashReport] UE4Editor_CoreUObject!UMetaData::SetValue() [metadata.cpp:351]
Fixed! UE-67611 [CrashReport] UE4Editor_Engine!ULevelScriptBlueprint::CreateLevelScriptNameFromLevel() [levelscriptblueprint.cpp:57]
Fixed! UE-68015 Crash occurs when applying instance changes to blueprint
Fixed! UE-62664 [CrashReport] UE4Editor_Kismet!SSCS_RowWidget::OnNameTextVerifyChanged() [sscseditor.cpp:3063]
Fixed! UE-67979 Create staticmeshnode or instancedstatic mesh node logs FNetGUIDCache warning in editor
Fixed! UE-67075 Touch events are broken on Linux
Fixed! UE-67255 Linux deployment fails if the folder does not exist on the machine
Fixed! UE-67004 Linux users are not able to switch a project’s engine version using the UnrealVersionSelector
Fixed! UE-67927 Linux OpenVR lib is not binary compatible with our baseline
Fixed! UE-68057 UnrealVersionSelector path does not expand with the width of UVS
Fixed! UE-67967 UnrealCEFSubProcess compilation is broken on Linux after char16_t changes
Fixed! UE-68017 Launching On To Linux fails with symbol lookup error: /Engine/Binaries/ThirdParty/OpenVR/OpenVRv1_0_16/linux64/libopenvr_api.so: undefined symbol: __dso_handle
Fixed! UE-68390 GitHub 5446 : Exit with error code in Linux scripts when continuation is invalid.
Fixed! UE-68411 Google Plus API needs to be removed from mobile
Fixed! UE-63791 HTML5 cannot connect to local Windows server
Fixed! UE-67234 Crash on Linux and Windows with Vulkan when adding Atmospheric Fog to a Level
Fixed! UE-67631 [CrashReport] libUE4Editor-VulkanRHI.so!FVulkanDevice::CreateDevice
Fixed! UE-64649 Extreme flickering when setting a high screen percentage when using vulkan
Fixed! UE-62779 Skylight Intensity Doesn’t Behave The Same in OpenGL as with DirectX
Fixed! UE-68489 Fix crash when SlateElement material uses CustomStencil
Fixed! UE-67243 CLONE - Cascade Particles within Animation Notifies Render Incorrect when Destroy Immediately Enabled
Fixed! UE-68109 Crash editor when open the level sequencer after updated 4.20
Fixed! UE-67242 Foliage meshes doesn’t follow the geometry planted on
Fixed! UE-63484 Memory Leak In PageAllocator When Packaged
Fixed! UE-67050 Crash in Python when garbage collecting map properties
Fixed! UE-65010 Help & About does nothing in ARVideoSettings, ARSaveLoad, and ARImageDetection
Fixed! UE-68502 Oculus Avatar animation not working
Fixed! UE-68331 Remote Session App has missing icons