Unreal Engine Issues
Unreal Engine Issues
Fields with Maximum resolution are not affecting all leaves of a Geometry Collection
UE - Simulation - Physics - Destruction - Apr 25, 2025Fields with Maximum resolution are not affecting all leaves of a Geometry Collection on 5.4 and onwards. When calling GetRelevantParticleHandles() a Maximum Resolution field does return all particl ...
Engine no longer compiles after backporting RHI thread improvements and crash fix
UE - Rendering Architecture - RHI - Apr 24, 2025Unreal Engine 5.4 code will no longer compile after applying both the RHI improvement code changes as described in [Link Removed] and the fix for the crash described in [Link Removed]. The compilati ...
Chaos Trailing Events not exposed to Blueprints and only accessible via Niagara Chaos DI
UE - Simulation - Physics - Destruction - Apr 22, 2025Chaos Trailing Events not exposed to Blueprints and only accessible via Niagara Chaos DI. The licensee noticed that the Trailing event is not available to BPs. It's expected that the same data avail ...
GAS: DefaultSubobject AttributeSet becomes invalid on duplicated blueprint
UE - Gameplay - Gameplay Ability System - Apr 22, 2025When a native actor 'AMyActorClass' creates AttributeSets as a default subobject via CreateDefaultSubobject, duplicating an actor blueprint based on AMyActorClass will result in a blueprint with an ...
FStateTreeExecutionContext::GetDebugInfoString() outputs wrong info and crashes when using linked state trees
UE - AI - Debugging - Apr 17, 2025When using State Trees, the AI Debugger can be accessed during play to show information about their current execution state. If a behavior tree is currently in a state that references a linked tree, ...
Bake Transform not working properly in DataPrep
UE - Editor - Content Pipeline - Visual Dataprep - Apr 16, 2025When I use my dataprep recipe I'm seeing something strange. The Bake Transform node seems to be stripping the transform instead of applying it. I have this in dataprep: https://udn.unrealengine.c ...
WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined property (bSimulatePhysics), throws an error
UE - Framework - Apr 15, 2025WindDirectionalSourceComponent.h has a meta edit condition that, by referencing an undefined class property (bSimulatePhysics), throws an error in the logs: LogEditCondition: Error: EditCondition pa ...
FName no longer equals FName_None when constructed with a trailing underscore and digits in range of 1-9
UE - CoreTech - Apr 15, 2025When an FName is created with a trailing underscore and any number of digits in the range of 1-9 the trailing digits are used as the internal number value for the FName lookup. This results in the F ...
Inconsistent parameter handling for pak/iostore block size / patch padding
UE - CoreTech - IoStore - Apr 14, 2025Users have trouble overriding the blocksize/patchpaddingalign parameters for UnrealPak from UAT commandlines.There is no easy way to specify these parameters through a buildcookrun, instead they n ...