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.  ...

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 ...

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.  ...

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. ...

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]. ...

MoviePipeline skipped frames using Temporal Subsampling + Time Dilation

UE - Anim - Sequencer - Jun 30, 2020

The frame appears to be getting skipped entirely, but the timing for the frames on either side of them is correct, ie: if frame 10 is skipped, frame 9 and 11 still match the working case, so the ove ...

Crash opening project with Hair assets

UE - Simulation - Physics - Jun 30, 2020

Crash occurs when the user opens the linked project, which has Hair assets. [Link Removed] ...

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 ...

Renamed material parameters in layer functions don't propagate to MIs

UE - Rendering Architecture - Materials - Jun 29, 2020

Long Movie Pipeline Renders cause Audio Crashes

UE - Anim - Sequencer - Jun 29, 2020

This issue can temporarily be worked around by launching the editor with the "-nosound" argument which will disable audio recording. ...