In a Blueprint Timeline, the Add Selected Curve Asset button doesn't function properly when a Float Track has already been added to the Timeline

UE - Framework - Blueprint Editor - Oct 28, 2021

When selecting the Add Selected Curve Asset button with a Float Track in a Timeline, nothing appears to happen. However, if you delete the Float Track and then either add another Float Track or add ...

Buffer Visualization Modes Are Inaccurate

UE - Graphics Features - Apr 19, 2018

In 4.18, Buffer Visualization Modes appear very similar to their representation in Buffer Overview. In 4.19 and Main (CL 4008322) the results are very blown out. Similar issue reported in [Link Remo ...

MRQ GBuffer Output Renders Normal GBuffer instead of BaseColor

UE - Anim - Sequencer - MRQ - Feb 27, 2025

When attempting to use console variables to render the BaseColor output, the GBuffer overview or GBuffer normal output is rendered instead.  Using the commands in the Editor viewport shows the BaseC ...

Subsurface Profile Materials That Are Illuminated By Particle Lights Render White

UE - Graphics Features - Feb 9, 2017

Due to the changes made to subsurface profile (implementation of full resolution skin shading) it now renders white or with heavily faded base colors under certain conditions. In this case it is wh ...

Bloom Blown Out In Forward Shading With MSAA and Separate Translucency Enabled

UE - Graphics Features - Mar 31, 2017

When a material is utilizing emissive color, separate translucency, and the project is using MSAA the material will give off intense bloom to the point of flashing the screen. [UPDATE] After addit ...

SceneTexture:WorldNormal Expression failing to Compile in World Align Blend Function

UE - Graphics Features - Jul 18, 2017

While attempting to modify the World Align Blend function in order to map decals to a surface based on a world vector input, I discovered the function fails to compile while passing the SceneTexture ...

SColorGradientEditor Does Not Trigger OnCurveChanged Events

Tools - Feb 26, 2016

User Description: "SCurveEditor, class which is used for float ramps, seems to trigger OnCurveChanged events for the underlying curve; however SColorGradientEditor (constructed by SCurveEditor) seem ...

GPU-ARM Mali 400 series phones will render an Opaque Unlit Material as black

UE - Platform - Mobile - Feb 12, 2016

ARM Mali 400 Series GPUs are rendering Opaque Unlit Materials as Black instead of the designated color. This is a *regression* from 4.10.2.Devices where Issue OccursDevice NameBrandBug Description ...

Physics not reacting correctly with physical material if velocity is not high enough

UE - Simulation - Physics - Feb 3, 2015

There are issues with the way Physics is being handled with physical materials. Having a physical material setup with a restitution of 1 and a high max depenetration value will result in no bounce. ...

VR billboard problems

UE - Platform - XR - May 3, 2018

https://udn.unrealengine.com/questions/429242/419-psvr-dynamic-resolution.html "We are experiencing a rendering regression in PSVR when upgrading from 4.17 to 4.19. A MaterialBillboardComponent tha ...