Unreal Engine Issues

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 ...

[Device Swap] - Assertion failed: AudioStreamInfo.StreamState == EAudioOutputStreamState::Closed [File:D:\build\++UE5\Sync\Engine\Source\Runtime\AudioMixerCore\Private\AudioMixer.cpp]

Issue has been seen a couple times internally and closed as No Longer occurring. Looking at Crash Reporter, issue has been seen live a number of times. Looking at user logs, occurs after:LogAudioMi ...

The RemoteRole will not be sync correctly when the push model is turned on

Full Body IK does not work properly when root bone has large scale

FBIK becomes extremely unstable when the root bone scale has a value other than 1. ...

In the Anim Sequence Editor set a Notify's MontageTickType to be fixed to BranchingPoint if that Notify is a Native Branching Point

To avoid confusing users when working with a Native Branching Point Notify set its MontageTickType to be fixed to BranchingPoint.  ...

Cannot bind lambda functions to Enhanced Input component

SceneQuery: UWorld::SweepSingleByChannel doesn't return BoneName on skeletal meshes with per-poly collision enabled

Scene queries when encountering skeletal meshes with per-poly collision enabled do not return a bone name in the HitResult. Returning the BoneName always or having it as an option via FCollisionQuer ...

Lyra - attribute sets of characters placed on world partition boundaries break in PIE

When placing an instance of ALyraCharacterWithAbilities on the map on the boundary between world partition cells, it fails to take damage in PIE. The expected attribute sets (HealthSet and CombatSet ...

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. ...