Unreal Engine Issues

Changing the Global Time Dilation to a very small value and returning it to a large value (by either using the slomo console command or directly in BP) makes Physics simulating ragdolls fly off into space.

Changing the Global Time Dilation to a very small value and returning it to a large value (by either using the slomo console command or directly in BP - slomo sets TimeDilation) makes Physics simula ...

FBoneContainer::MakeMeshPoseIndex crash (out-of-bounds array)

Lumen doesn't use correct sky light settings when GI scalability changes from Low to High

When the Global Illumination scalability settings are changed in the editor from High to Medium, they primarily act on the r.Lumen.DiffuseIndirect.Allow and r.SkyLight.RealTimeReflectionCapture.  No ...

Iris - Ensure in MarkObjectDirty when calling multicast from component owned by bOnlyRelevantToOwner actor

It seems as though the component is in scope for more than one connection, despite its owner only being relevant to one. Enabling Net.Iris.Filtering.ValidateNobSubObjectInScopeWithFilteredOutRootObj ...

Geometry collection components report incorrect mass for character movement components

A player cannot move heavier GC objects even if we have a valid setup due to the GC not reporting the correct mass.  ...

Strip out disabled Pose Search Database animations during cook

Animations that are disabled in the Pose Search database still get loaded in a cooked build ...

Blueprint improperly marked dirty when it contains a latent node with a byte enum

In UE 5.4, when deleting actors in our levels, some blueprints will be mark dirty despite not having changed. We traced that down to FAssetRenameManager::CheckPackageForSoftObjectReferences. The af ...

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, ...

Niagara Editor Viewport will crash when rendering opaque materials with Mobile Multi-View and Mobile Vulkan Preview Enabled

The Niagara viewport will crash when rendering opaque sprites if Mobile Multi View and the mobile preview are enabled. Additive materials do no crash, and if the viewport is not set to lit it does ...

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 ...