Unreal Engine Issues

Ray Traced Shadows ignore mesh occlusion on water when enabled

A forum user reported an issue where object geometry occlusion would be missing when Ray Traced shadows were enabled. I was able to reproduce the issue internally where occlusion seems to be missing ...

Cached camera component on LevelSequencePlayer is null

Cached camera component on LevelSequencePlayer is null

FDeferredDecalProxy cannot be initialized to not fade even if FadeDuration is set to 0

FDeferredDecalProxy always fade because InitializeFadingParameters is always called and leaves InvFadeDuration at 1.0 and the LifetimeAlpha calculation in FDeferredDecalPS::SetParameters gets a very ...

Conditional crash when a DragAndDrop operation is done betweeen Data Layers.

A crash occurs to the engine as when we when have unreal as a backgroud task, and we try to drag and drop a layer to another by selecting the layer visibility button. ...

Material not compiling due to WorldAlignedTexture connected to multiply

When a WorldAlignedTexture node is connected to multiply and then to a base color output, the material cannot be compiled, giving an error about an undeclared local variable "Local27". Does not happ ...

EnumRedirections from a Blueprint enum to a c++ enum does not redirect everything correctly.

There is an engine bug when using the EnumRedirects feature inside a config file. If we have a Blueprint Enum used in our blueprints, and we want to convert all the Blueprint enum references to a C+ ...

Nanite can assert in ValidateFixupChunk: 'Assertion failed: HierarchyNodeIndex < Resources.NumHierarchyNodes'

Reported by a licensee. More discussion in the linked UDN case. "Sometimes the WorldPartitionBuilderCommandlet will fail after encountering this error:" Error: Assertion failed: HierarchyNodeIndex ...

In UChaosGameplayEventDispatcher::HandleCollisionEvents(), when bSwapOrder = true, Comp1 should be set to PhysicsProxy0's owning component, not PhysicsProxy1's.

Implementing an EventHit node in a Geometry Collection Actor and printing the Names of the returned values, it wrongly returns the reference to this Actor (self) on the Other actor object reference, ...

UGeometryCollectionComponent::EventDispatcher gets registered for events twice what can result in duplicate collision events being fired

UGeometryCollectionComponent::EventDispatcher gets registered for events twice, once in UGeometryCollectionComponent::RegisterForEvents() and again in UChaosGameplayEventDispatcher::OnRegister(). Th ...