Closing a Geometry's Collection Dataflow Editor window when the ChaosVehiclePlugin is enabled is crashing the Unreal Editor when running it with the -stompmalloc flag

UE - Simulation - Physics - Jan 27, 2025

As the title describes, closing a Geometry's Collection Dataflow Editor window when the ChaosVehiclePlugin is enabled is crashing the Unreal Editor when it is running with the -stompmalloc flag. The ...

Lyra 5.5 - LAS_ShooterGame_SharedInput has got a missing reference on InputMapping #1

UE - Gameplay - Input - Jan 27, 2025

The templated Lyra project for 5.5 is missing a reference to IMC_Default_KBM on /ShooterCore/Experiences/LAS_ShooterGame_SharedInput because it looks like IMC_Default_KBM was renamed to IMC_Default. ...

[Interchange][gltf] Imported animation are all 1 frame long.

UE - Editor - Content Pipeline - Import and Export - Jan 27, 2025

All the imported animation only contain one frame. If the file contains in archive are imported in a gltf web viewer we can see animation are playing.  [Link Removed] [Link Removed] https://foru ...

Improve time slicing of UWorld::RemoveFromWorld (RouteEndPlay pass and post-RouteEndPlay pass)

When a Level is being removed from world (UWorld::RemoveFromWorld), the time slicing (time limit) is not respected especially if the EndPlay of actors takes some time.Before starting the RouteEndPla ...

Crash when toggling the SmartLinkEnabled state of a NavLinkProxy specifically in a packaged game targeting Debug/Development

UE - AI - Navigation - Jan 24, 2025

The licensee has reported, and I was able to reproduce, that specifically in package builds targeting Development configuration, trying to toggle the SmartLinkEnabled state of a NavLinkProxy will cr ...

Shader info strings overlap in MaterialInstanceEditor and are unreadable

UE - Rendering Architecture - Materials - Jan 24, 2025

CL-35369646 changed the debug information string to span multiple lines, but the Y offset moves forward by only one line, so the string overlaps. ...

Blueprint function-local variable properties don't copy metadata from the source FBPVariableDescription

UE - Framework - Blueprint Compiler - Jan 23, 2025

FKismetCompilerContext::CreateUserDefinedLocalVariableForFunction() does not copy the metadata from the source FBPVariableDescription entry. Class variables work because there is code for that in FK ...

Bitfield enums don't cast correctly in Blueprints

UE - Gameplay - Blueprint Compiler - Jan 22, 2025

The licensee already investigated this a little. The problem appears to be that UKismetNodeHelperLibrary::GetValidValue should be calling IsValidEnumValueOrBitfield as opposed to IsValidEnumValue. ...

[Interchange][FBX] Issue with asset name clashes after auto import

UE - Editor - Content Pipeline - Import and Export - Jan 22, 2025

The mesh changes and the asset name stays the same while the two FBX are completly different: different filename, different mesh names in the FBX CF video for repro steps. https://forums.unreale ...