Unreal Engine Issues

Lightmass ignores StaticSwitch in materialinstance

This is caused by FLightmassMaterialProxy doesn't have GetStaticParameterSet() function. (FMaterial::GetStaticParameterSet() is called.) It can be fixed by adding the following function to FLightma ...

Normal of Skeletal Mesh is incorrect when Recompute Tangent is used when Skincache is enabled

This issue occurs in Skeletal Mesh depending on the model when Skincache is enabled and affects the rendering. ...

D3D device being lost ( DXGI_ERROR_DEVICE_REMOVED ) on both D3D11 and D3D12

It is hard to reproduce, but a licensee reported in UDN that it crashed on his computer frequently. He provided two crash dumps with logs which I uploaded here.[Link Removed][Link Removed] OS: W ...

Importing camera FBX through Python will not import focal length

Importing a camera's FBX through Python will not import a camera's animated focal length. ...

Stepped animations do not align with level sequences when playing at the same frame rate

Stepped animations will not evaluate at the same frames as the level sequence it's in even when they are both at the same frame rate.  ...

Creating a new TextureRenderTarget2D Asset has the sRGB flag

The sRGB flag is check and set in PostEdit, so when I editing the asset will be correct. And I'm checking again with RHI, so there seems to be no drawing problem.[Link Removed] It seems to be corre ...

Niagara Particles do not respond to Set World Origin Location

Setting the world origin will not update existing Niagara particles. ...

Adding an actor with a default property track immediately after opening a sequence will crash the editor

If an actor has default property tracks set up in the Project Settings, adding that actor to a level sequence through C++ will crash the editor. This seems to stem from the creation of the default p ...

Animation assets recorded through take recorder aren't being added to source control

RetainerBox may cause memory leak

Essentially, this memory leak should be counted in the UI section, but it is counted in the SceneRender section. This seems to be due to the behavior of MemStackAllocator and FixedSizeAllocator. Th ...