Unreal Engine Issues

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 ...

Set Texture Object on Niagara Components no longer works for render targets.

When adding support for cube texture ([Link Removed]) there was no check added for render targets, making them invalid for Set Texture Object, when they were previously supported. ...

Unable to set Mesh Renderer Info source renderer

Unable to set Mesh Renderer Info source renderer ...

Compilation error when using Particle SubUV in Niagara Mesh Particles with Raytracing enabled.

The licensee has shared the following workaround for modifying NiagaraMeshVertexFactory.ush. struct FVertexFactoryInterpolantsVSToPS { TANGENTTOWORLD_INTERPOLATOR_BLOCK #if USE_PARTICLE_SUBU ...