Attempted to use an out of date DemoNetDriver when using DemoPlay through blueprints

UE - Networking - Oct 27, 2017

Users are not able to play a Demo in PIE using the Execute Console Command node to run the demoplay command. The following warning spams the output log while the demo is still trying to open:LogWor ...

RemoveAxisMapping() removes axis mappings of the same key regardless of Scale value

UE - Gameplay - Jun 26, 2019

When you remove an axis mapping using a specific key it will remove all mappings even if they have separate scales. The user found a fix that I verified that worked. In "InputSettings.cpp", which i ...

XR Planar Reflections lag behind VR headset movement

UE - Platform - XR - Mar 24, 2023

Planar Reflections lag behind VR headset movement [Link Removed] Reporting that reflection captures lag because they happen before late update is applied. Includes an experimental patch that fi ...

TakeRecorder does not add a track to a level sequence when niagara FX is spawned

UE - Anim - Sequencer - Mar 5, 2024

In UTakeRecorderActorSource::EnsureObjectTemplateHasComponent() function, MakeUniqueObjectName() generates the same name of a component which CachedObjectTemplate for TakeRecorder has already had. T ...

AnimToTexture vertex animation stutters on looping frame

UE - Anim - Gameplay - Aug 8, 2025

The AnimToTexture plugin generates an animated texture that results in a stutter when the animation loops. This looks to be related to the code in UAnimToTextureBPLibrary::AnimationToTexture which ...

Patterns On Landscape Spline Normals

UE - Graphics Tools - Terrain - Oct 31, 2025

On higher-density Landscapes, Landscape Splines can lead to patterned artifacts in the geometry normals. Also tested on //UE/Release-5.6, CL:45232827 ...

Cached State Machine is re-initialized whenever cached pose is referenced

OLD - Anim - May 19, 2015

This may not be an expected use of state machines, but it is becoming a showstopper for a couple of users. These user's are caching their locomotion state machine and then using a second state mach ...

Outside of AnimBP's, Animation Sequences with negative Rate Scales do not animate

OLD - Anim - Mar 20, 2015

Animation Sequences with negative Rate Scales do not play outside of using them in Animation Blueprints...unless they are looping. UPDATE: A negative rate scale value also breaks Anim Montages. ht ...

Duplicating meshes in blueprint improperly place transform widget and initially does not appear in viewport

UE - Gameplay - Blueprint - Jun 24, 2015

If a mesh is duplicated within a blueprint components panel, it will be invisible in the viewport, the transform widget will incorrectly align itself and refrain from moving, and if the transform wi ...