Unreal Engine Issues

MoviePipeline: Python Editor example can double-up objects in-scene

See the UDN for sample project. This is caused by the Editor Python sample not using the UMoviePipelineQueueSubsystem, which (when rendering) blocks the Sequencer from auto-binding to PIE. The fix ...

Attached Gameplay Cues with decals that override SetFadeOut will destroy their target actor on fade out

Burst GCs will destroy the target actor if you attach them to the target (FGameplayCueNotify_PlacementInfo::AttachPolicy) and override the decal fade out (FGameplayCueNotify_DecalInfo::bOverrideFade ...

MVVM - ViewExtension is not added when no Bindings are setup in the Bindings view

UObject Macro Libraries cannot use functions that require a WorldContext

If you make a Blueprint Macro Library that derives from UObject you are then unable to use any functions that require a WorldContext, like Delay. This is because the WorldContext cannot be assumed l ...

The UI layer system in Lyra leaks widgets when changing level

Derived struct data is not copied to Base struct

The actor Blueprint is intentionally causing an object slice to occur. In other words, we're copying a derived type to a base type, so the expectation is that only the inherited base properties are ...

UDN - Crash reverting SkeletalMesh unsaved changes

Option "Update Animation in Editor" is reset for child skeletal meshes

When the boolean is set on a child skeletal mesh, looks like it gets reset   Specifically , at UActorComponent::ConsolidatedPostEditChange forces a reconstruction of the Blueprint, making the trans ...

In AnimNode_RigidBody.cpp, PhysicsSimulation->CreateActor() is being passed World Space transforms, when it should be getting Local Simulation space transforms

In AnimNode_RigidBody.cpp, PhysicsSimulation->CreateActor() is being passed World Space transforms, when it should be getting Local Simulation space transforms. The licensee has reported that FAnimN ...

Physics object with collision box detects multiple begin/end overlap events even when specific collision channel is utilized.

If a blueprint has a physics object and a collision box, the box will register overlap begin/end events multiple times, even if the collision is set to only overlap with specific collision channels ...