Unreal Engine Issues

GAS: Double attributes not shown GameplayDebugger

Context The Gameplay Ability System lets devs specify numerical attribute properties in UAttributeSet subclasses. Although the preferred attribute property type is FGameplayAttributeData, GAS has l ...

Reparenting a UserWidget within that widget's events can break links between UWidgets and their SWidget.

Reparenting a widget within it's own event can cause that widget's tree to have null references instead of references to slate widgets. This happens because when a widget is reparented, we remove a ...

Crash in Forward Renderer DX11 RHI Impl when using VR PIE

// enforce color target is <= depth and MSAA settings match if(RTTDesc.Width > DTTDesc.Width || RTTDesc.Height > DTTDesc.Height || RTTDesc.SampleDesc.Count != DTTDesc.SampleDesc.Count || ...

Volumetric Lightmaps Do Not Sample Correctly Under Landscapes

Per Licensee:  I noticed that the Volumetric Lightmap does not build at correct density if an object is under the level of the terrain. Is this a feature or a bug? I'm creating a under-terrain dung ...

UHT fails to parse non-inlined UFUNCTION with RESTRICT keyword in parameter list

When you have a non-inlined ufunction, UHT fails to parse the restrict keyword in its parameter list. Note: The following compiles (notice that the only change is the use of the FORCEINLINE keywo ...

Compilation errors in Shallow Water contents example's Niagara module script

This seems to be because the ModuleUsageBitmask is hardcoded as Particle. Sig.ModuleUsageBitmask = ENiagaraScriptUsageMask::Particle; UNiagaraDataInterfaceGrid2DCollection::GetFunction { ... ...

Missing shadows when combining CSMCaching and Nanite

A Nanite primitive casting a CSM shadow on another Nanite primitive with "Cast Shadows" disabled, will have it's shadow disappear completely when r.Shadow.CSMCaching = 1. ...

GameplayAbilitiesSystem: GameplayCues OnRemoved never firing

This behaviour was introduced in the following changelists in 5.3: CLs 25371706 and 25407985 https://github.com/EpicGames/UnrealEngine/commit/6e985ceeb98bc0d166756ccd3e3c0b0350d02265https://github. ...

UBlueprintEditorLibrary::ReparentBlueprint() results in compiler errors when attempting to reparent from a native parent class to a blueprint parent class

When using the Reparent Blueprint node in an Editor Utility Blueprint, e.g. an Asset Action Utility, compilation errors will occur if you try to reparent a blueprint with a native parent class to a ...

The Open Asset dialog is disabled during breakpoint