Unreal Engine Issues

Crash when calling SetVector2DParameter on a Niagara Parameter Collection

Crash when calling SetVector2DParameter on a Niagara Parameter Collection. The value for the SetVector2DParameter may or may not have to be changed in order for the crash to occur.  Assertion faile ...

Niagara : incorrect rendering on D3D12 when rendering a very large number of meshes

The input argument of DrawIndirect for Niagara meshes, which is made by ComputeShader, may be invalid. This problem does not appear with -onethread command line option. ...

Set Niagara Variable (Object) for Texture Object fails

Set Niagara Variable (Object) does not work for texture objects. ...

Destructing NiagaraParameterStores causes multi threading write conflict

FNiagaraParameterStore::UnbindAll() may be called from both GameThread and RenderingThread. Each may modify the same Binding array, it causes infrequent crashes. In my environment, I was able to r ...

Niagara Dynamic Parameters do not reflect layers in material instances.

The names of dynamic parameters in material layers do not seem to update from material instances.  ...

Niagara versioning Upgrade Notes do not stay dismissed after update from 4.26

Incorrect number of vertices displayed by ProfileGPU command in Cascade particles

This issue was reported by the licensee, but it's possible that the number of vertices in the particles is higher than it really is. ...

Niagara Mesh Particles do not work with Refractions from Ray Traced Translucency

GPU Particle may blink when rendered in scene capture.

Editing parent emitters with mesh renderer in a niagara system causes crash

After editing the parent emitters of a Niagara system with mesh renderer particles the engine will crash the next time the editor and system are opened.  This was tested with both engine content cub ...