Unreal Engine Issues

Orthographic Rendering - Lumen Reflection Artefacts

"Literal Enum" BP node outputs wrong value when the input pin is connected

This behavior was not observed up to UE 4.19, but it can be reproduced in all versions from 4.20 to 5.4. When a "Literal Enum" node is used inside a blueprint and an enumeration value is chosen fro ...

TranslucentVolumeAmbient is darkened in InjectTranslucencyLightingVolume pass when using VSMs with r.Shadow.Virtual.ForceOnlyVirtualShadowMaps is Off

CSM targets are still created and affect the InjectTranslucencyLightingVolume pass when moving in a project that only uses VSM causing over brightening of fog planes and other translucent meshes. r ...

Landscape raytracing geometry always updates every frame

LOD 0 Landscape meshes are always updated in FLandscapeComponentSceneProxy::GetDynamicRayTracingInstances because* r.RayTracing.Geometry.Landscape.LODsUpdateEveryFrame* (GLandscapeRayTracingGeometry ...

Reimporting Duplicated Mesh from Blender Creates Merged Meshes

When a mesh in Blender is Duplicated and exported as an FBX, then imported into Unreal with Combine Meshes unchecked, then both meshes reimported, one of the meshes has another mesh added to it. The ...

RotateVector Function Not Properly Rotating SkysphereTexture

RotateAroundAxis Inside the RotateVector expects a normalized vector as rotation axis input, and that vector is not normalized. Once normalized it seems to work normally. Unable to test in 4.19 due ...

Materials Draw through a HUD blueprint do not update when collections Parameter are used

Materials applied via HUD do not appear to update when collection parameters are changed for the applied material ...

Startup Movie renders as a black screen on some Android devices

While testing on the 10661_Xiaomi Mi 5C the Startup Movie would occassionally render as a completely black screen while still playing the audio from the Startup Movie sample. This was the most consi ...

Interface Message Nodes report an error if multiple inputs are connected to the Target pin.

Connecting multiple object pins as inputs to the Target input pin of an interface message node causes an error of the format:failed building connection with 'Replace existing input connections' Thi ...

A SoftPathObject as an input parameter referenced by a Blueprint Node didn't cook out

The input paramter is a type of UEdGraphPin.  The PinType.PinCategory can be softobject or softclass, and the reference path is saved in a paramter named DefaultValue of UEdGraphPin.The DefaultValue ...