Unreal Engine Issues

Inaccurate motion vectors when using different position binding in renderer

Even though the particles are not moving, and the velocity is zero, the output motion vectors are non-zero. This seems to only happen if using two sources of particle positions.  ...

BP property initialization fast path does not handle non-instanced properties assigned to default subobjects correctly

Non-instanced object ref properties are incorrectly being skipped at property initialization time when Blueprint class instances are spawned with the fast property initialization path enabled. This ...

NiagaraComponent attached to the character won't stay active when travelling to a new level using seamless travel

The pawn character is added to APlayerController::GetSeamlessTravelActorList, so it'll be persisted during server travel. The Niagara component is spawned during BeginPlay and activated manually. W ...

Virtual Heightfield Mesh crash using released Vertex Factory

When using VirtualHeightfieldMesh we see intermittent crashes in FDepthPassMeshProcessor::TryAddMeshBatch(). This can happen when FVirtualTextureProducerCollection::CallPendingCallbacks() is called ...

Console history in packaged game is not saved

Console history is saved correctly in 5.1. The cause is input.ini in EnhancedInput and InputDebugging added in 5.2. Removing these files are a work around. ...

FMaterialResource::IsDualBlendingEnabled bug

The user has a proposed fix for this in the case. FMaterialResource::IsDualBlendingEnabled needs the following modification that includes MaterialInstance check: bool bMaterialRequestsDualSourceBle ...

Level instance edit mode changes actor transforms

Compatible Skeletons: Support additive animations with different skeleton for additive base

See linked UDN for details: [Link Removed] ...

Rotation gesture inconsistent output

Rotation gesture input breaks on android. Not checked on ios/pc ...

Iris - Function descriptors will prevent protocols from being marked as fully push based