VFInitRotation(Cascade) always provides the same rotation

UE - Niagara - Jun 30, 2020

This problem caused by incorrect initialization of RandomStream in the GPU particle. //PaticleGpuSimulation.cpp virtual void Init() override { ... check(AllocatedTiles.Num() == TileTimeOfDe ...

Sequencer particle toggle tracks evaluate one extra frame

UE - Anim - Sequencer - Jul 1, 2020

It looks like particle toggle tracks use TimeRangeToNumberRange which gives the incorrect range as a result of CL 10893518 which fixed [Link Removed]. ...

Array property of a User Defined Struct is corrupted when additional properties are added to the struct

UE - Foundation - Core - Jul 1, 2020

Modifying a UserDefinedStruct can lead to data corruption in Blueprint array properties. ...

Crash when copy and paste actor track what is spawnable and has event track.

UE - Anim - Sequencer - Jul 13, 2020

This issue is regression. It crash only 4.25, and it dosen't crash in 4.24. Copy and past a specific track (spawnable, actor with event track, set endpoint) causes a crash in the editor.  ...

Crash in D3DX12Residency::Internal::RemoveEntryList when travelling level

UE - Rendering - Architecture - RHI - Jul 13, 2020

The engine may touch freed memory at D3DX12Residency::Internal::RemoveEntryList. The memory release operation that is causing the problem is in FD3D12DynamicHeapAllocator::AllocUploadResource(). If ...

Ensure condition failed : SkeletalMeshLocation module on scaled SkeletalMesh

UE - Niagara - Jul 14, 2020

The message in ensure is below LogOutputDevice: Error: === Handled ensure: === LogOutputDevice: Error: Ensure condition failed: (FMath::Abs(1.f - M.GetScaledAxis(EAxis::X).SizeSquared()) <= (1.e-4 ...

Blueprint Properties retain meta data through a type change

UE - Gameplay - Blueprint Editor - Jul 13, 2020

Instead of clearing the metadata we should enable editing the metadata for vectors since the details panel supports it already.  ...

Local space particle with SkeletalMeshLocation on scaled mesh is doubly scaled

UE - Niagara - Jul 14, 2020

MeshCurrSamplingBonesBuffer already has scaled bone transforms, but these scales have not been cancelled out when using local space. ...