Unreal Engine Issues

Switching AnimLayer to child AnimBP doesn't trigger inertial blending

At compile time, BlendOptions array which contains BlendTime setting are created. These are copied from its own interfaces, not the parent's. The blending works fine if the parent's interface is als ...

Second controller input doesn't work in fullscreen mode on PIE.

When two controllers connected, player2 input is disabled in full screen mode in PIE. This doesn't appear to be in focus. If seeing the any focusing widget, player1 focused on SViewport, but player ...

FUniqueNetIdRepl::NetSerialize() crashes when embedded in a TArray() of structs.

Calling the NetSerialize() function of FUniqueNetIdRepl from a custom NetSerialize() causes a crash. This only seems to occur when the struct is part of an array RPC parameter. ...

VFInitRotation(Cascade) always provides the same rotation

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

Codesigning fails when multiple builds are occurring at the same time on the Mac

Sequencer particle toggle tracks evaluate one extra frame

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

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

Crash when converting SK to SM when sk comp have bRenderStatic

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

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

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