Ensure when setting Bone Axis to None in Spline IK

UE - Anim - Rigging - Dec 13, 2016

An ensure occurs when setting Bone Axis to None on a Spline IK node. This doesn't occur with any of the other options for Bone Axis. ...

Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way

UE - Rendering - Architecture - Sep 28, 2021

The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...

[CrashReport] UE4Editor_DetailCustomizations!FBodyInstanceCustomization::MarkAllBodiesDefaultCollision() [bodyinstancecustomization.cpp:829]

UE - Simulation - Physics - Aug 29, 2017

This is an infrequent crash occurring in the 4.17 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 816 void FBodyInstanceCustomiza ...

Clear Coat looks incorrect in the Preview when Energy Conservation on Material is enabled for non Substrate rendering

UE - Rendering - Architecture - Materials - Apr 11, 2024

Enabling Energy Conservation on Material makes Clear Coat Material look weird in Preview. It looks fine in the Level Editor, but not in any "Preview" type viewport (Material Editor, Asset Thumbnails ...

Importing fbx onto an empty camera animation sequence can crash the editor

UE - Anim - Sequencer - Jan 27, 2022

Importing an FBX into an empty camera animation sequence crashes the editor. The import seems to fail when trying to add a camera cut track. Exporting an fbx from a camera animation sequence, deleti ...

Any Alpha value set in a FLinearColor used to draw a line on a Canvas HUD is ignored when the line is drawn

UE - Graphics Features - Apr 21, 2015

If an Alpha value is set in a FLinearColor that is used to draw a line on a Canvas HUD, the Alpha value is ignored when the line is drawn. A comment in BatchedElements.cpp indicates that some legac ...

Raytraced reflection doesn't work with high roughness

UE - Graphics Features - Lumen - Oct 30, 2020

Even when the max roughness for raytraced reflections is set to 1, they seem to be blended away at far below that value. For projects (e.g. film,vfx) where quality trumps speed it would be valuable ...

'Directions are not Compatible' error on ForEachLoopWithBreak if split struct pin is disconnected from Enum type

UE - Gameplay - Blueprint - Mar 25, 2015

'Directions are not Compatible' error on ForEachLoopWithBreak if split struct pin is disconnected from Enum type. Note: If the pins are reconstructed and the resplit, the error is fixed. ...

ScrollBox: Add Inertial Scrolling (Touch)

UE - Editor - UI Systems - Oct 16, 2015

Verify that inertial scrolling works in the ScrollBox and the ListView on touch devices. We have reports that it isn't working in 4.9, it may have been fixed since then, or not be as smooth as it c ...

WmfMedia: Track switching does not work

Media Framework - Aug 31, 2016

Track switching is currently not supported, because media with multiple tracks of the same type fail to load. Once that is fixed, implement run-time track switching. ...