Unreal Engine Issues

Niagara Parameter Collection does not get updates from Material Parameter Collection changes in the editor

When an MPC is selected as the Source Material Collection for an NPC, all of its current parameters are carried over to the NPC with their current values. After that, if parameters are added to, rem ...

Crash when an empty Anim Composite is attached to a Mesh component of a BP actor in a Level Sequence

There is a crash that will occur when an empty Anim composite asset is being referenced in the Mesh component attached to a BP actor within a level sequence. Crash also occurs in Live 5.4.4 - not a ...

Issues with global invalidation (MoviePlayer)

It was mentioned that the global invalidation should be toggled off during loading screen and subsequently restore the state after. A request was made for this dynamic behavior be part of the engin ...

UTextureRenderTarget2D uses TC_Default for PF_R16F instead of TC_HalfFloat

When using "ConstructTexture2D" from a render target that uses the format PF_R16F (RTF_R16F) the output texture won't retain the format and will become a four channel float texture.  The texture for ...

Landscape height data gets cleared when working with partially loaded landscapes

Deleting an external actor without checking it out causes bad state

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)

Problems with shadows on transluscent materials

Shadows on the surface of SingleLayerWater are heavily pixelated, and don't appear to use bilinear filtering at all. Also tested on //UE5/Release-5.5, CL: 36481335 ...

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 ...