Runtime Virtual Texture primitives set to never render to main pass still cause occlusion queries

UE - Graphics Features - Mar 23, 2021

RVT only primitives are being pushed through the occlusion culling. It would be more efficient to not do that. ...

Base Pose Type Not Retained When Retargeting Animation with Additive Anim Type

UE - Anim - Rigging - Retargeting - Apr 22, 2022

Occurs 3/3 Times Base pose animation is not retained when retargeting animation with an additive anim type. ...

Selecting other components after selecting a Spline Component's control point keeps the transform gizmo and functionality at the Spline Control point

UE - Editor - Workflow Systems - May 3, 2022

Selecting other components after selecting a Spline Component's control point keeps the transform gizmo and functionality at the Spline Control point Repro Rate: 4/4 Tested this in //UE4/Release-4 ...

Animation tracks reset to ref pose when editing actor properties.

UE - Anim - Sequencer - Sep 15, 2022

Editing an actor's properties in a sequence causes the animation to go to ref pose. ...

Duplicated ChildActor on World Partition Streaming

UE - World Creation - Worldbuilding Tools - World Partition - Feb 5, 2024

The issue is encountered when streaming a world partition an actor with an AChildActorComponent which generates 2 instances instead of one when run as a client in the editor. This behavior does not ...

Issue with Landscape Layer Blending Node compile in UE 5.4.2

UE - Graphics Tools - Terrain - Aug 2, 2024

When the SetMaterialAttributes Material Expression is used without an input to MaterialAttributes, it will cause Landscape Layer Blend expressions to fail to compile if it is the only layer on a par ...

LIVE: Multiplying an FQuat*FQuat via pass-by-value crashes editor on open

UE - Foundation - Core - Nov 5, 2014

If a function takes in an FQuat value and then multiplies it by an FQuat, the project will build properly but then crash when trying to launch the project in the editor. Example project available b ...

Oculus mirror window goes black when headset removed for any mirroring mode besides 0

UE - Platform - XR - Nov 16, 2016

If using any hmd mirroring mode besides 0 on Oculus, when the headset is removed, the mirroring window goes black in a packaged build, or in -game, for example: UE4Editor.exe VrTemplate4x15 MotionCo ...

Precomputed AO Masks cannot be used to LERP between Normal Maps

UE - Graphics Features - Sep 18, 2015

When using the Precomputed AO Map node to LERP between 2 Normals, only the A input into LERP will render out on the mesh. The Precomputed AO will work fine for Base Color LERPs Example: [Image Re ...

Set Array Elem is missing the Item checkbox when connected to an existing array variable

UE - Gameplay - Feb 8, 2017

Set Array Elem is missing the Item checkbox when connected to an existing array variable that was created separately. The checkbox is present if the Set Array Elem is created off of the array variab ...