Groom bound to GeometryCache is unstable

Tools - Editor - Datasmith Importer - Aug 10, 2021

This issue seems to occur only in 4.27 with DX12. Did not repro in 4.27 with -dx11, nor in UE5 DX11/DX12. ...

Niagara Crash : ExportParticleDataToBlueprint module causes buffer overrun

Rendering - Niagara - Aug 10, 2021

This buffer overrun is probably caused by the ExportParticleDataToBlueprint module does not respecting the GPUAllocation Fixed Size setting in the module. In fact, out-of-range export data is not c ...

Refraction broken when using material function

Rendering - Aug 10, 2021

Licensee has provided a BP workaround ...

[Feature Request] Niagara Ribbon Render needs V direction Tessellation option

Rendering - Niagara - Aug 8, 2021

It has a common chunking visual artifacts that lot's of triangular Translucent overlap once Ribbon's width is big and twisted heavily facing to Camera [Image Removed] It can be fixed by adding mor ...

Copying and pasting event tracks will break endpoint bindings

Anim - Sequencer - Aug 6, 2021

See linked UDN for more info. There appears to be an issue with mismatching parents when copying causing this to fail. ...

Pasting a component binding onto a Spawnable will not set up parenting correctly

Anim - Sequencer - Aug 6, 2021

It appears that for spawnable bindings, when adding a child binding through a copy/paste it is not added to the child bindings array on the spawnable, so when GetChildPossessables is called, there a ...

Shader compilation failure crash with DX12, Tesselation, Distance fields, Instanced Stereo, and Hierarchical LOD Coloration viewmode

Rendering - Aug 5, 2021

upd. Regression was checked on //UE4/Release-4.26 CL 15973114, issue wasn't reproduced. Regression - YES Shader compilation failure crash with DX12, Tesselation, Instanced Stereo, and Hierarchical ...