Niagara Preview viewport is unaffected by Preview Scene Setting Environment Color

Rendering - Niagara - May 14, 2020

Preview Scene Setting Environment Color only shows as black in Niagara editor viewports This issue does not reproduce in the Material, Static Mesh, Skeletal Mesh, Anim BP, or Control Rig Editors. ...

ObjectScale returns a Cascade Mesh particle's XYZ scale as 1.0

Rendering - Cascade - May 13, 2020

Sampling a Cascade Mesh Particle's scale always returns XYZ as 1.0 This is a regression from UE4/Release-4.24.  This does NOT affect Niagara Mesh particles.  I've attached a Cascade (left example ...

Sequencer transform origin not updated on first frame

Tools - Sequencer - May 13, 2020

When the level sequence is evaluated from calling play on a level sequence player the level sequence actor does not have an opportunity to tick, which is where the transform origin is calculated. ...

Calling Array_Identical in a blueprint results in a compile failure with nativization

Gameplay - Blueprint - May 13, 2020

REGRESSION Does not occur in 4.24 Blueprints that call Array_Identical results in a failure during nativization:F:/Projects/Release/TestNativizeArray/Intermediate/Plugins/NativizedAssets/Windows/Ga ...

Switching raytracing console variable in runtime can crash engine.

Rendering - Ray Tracing - May 13, 2020

Licensee reported that is caused by missing ECVF_RenderThreadSafe flag in these console variable definitions. r.RayTracing.Shadows r.RayTracing.AmbientOcclusion r.RayTracing.Reflections Here is a ...

Make staticmesh custom LOD coexist with LODGroup

Tools - Import - May 13, 2020

The LOD Group is remove if we import a custom LOD for one of the generated LOD. This can be difficult when user change the LOD group setting later in the production, has the LODs that was regenerate ...