Crash when generating mip maps for texture

UE - Graphics Features - Dec 23, 2019

Generating mip maps results in crash and seems to duplicated 1x1 mip level. NOTE: The bug was originally reported in 4.23.1, however, for some reason I was able to open the texture in 4.23.1 afte ...

AR Core - Apps with Candidate image result in black screen on first launch

UE - Platform - XR - Jan 20, 2020

On first launch of an AR app with Android the camera passthrough will render black. This also happens if an app is minimized and re-opened. This will not repro if there is no candidate image assign ...

Unable to Import Alembic Files in UE4

UE - Editor - Content Pipeline - Import and Export - Feb 25, 2020

We have written a plugin for UE4 that allows Unreal users to import and set up Megascans assets into Unreal Engine. Recently we added Alembic files to our assets and also updated all our plugins to ...

Distance Cull Fade Node on Material does not work with Skeletal Mesh

UE - Rendering - Architecture - Materials - Apr 22, 2022

The licensee reports that this issue is caused by the following code not performing a Buffer update. .\Engine\Source\Runtime\Renderer\Private\ShaderBaseClasses.cpp void FMeshMaterialShaderElementD ...

Regular UMG Widgets can be reparented to editor widgets but do not work.

Tools - May 11, 2020

This may just need to be closed, we may not be able to control this at such a level.  This really comes up more than you would guess.  I think almost everyone has made a widget, wanted to call Edito ...

CopyTask in BuildGraph never throws an exception if the copy fails

UE - Foundation - Horde - BuildGraph - Feb 28, 2023

CopyFile function in CommandUtils.cs assumes that an exception will be thrown if the number of retries is exceeded, but the loop condition prevents it from being thrown. Following fix works:publics ...

Screenspace Denoiser creates artifacts for Ray Traced Shadows

UE - Rendering - Graphics Features - Ray Tracing - Nov 13, 2023

Screen space denoiser creates two types of artifacts: artifacts around boundary for general lighting The artifact is there before 5.2 but since the ray traced shadow denoiser denoises on the sqr() s ...

Skeletal Mesh component that uses Anim BP does not translate after swapping root bone on particular Anim section in Sequencer

UE - Anim - Anim in Engine - Apr 19, 2023

Repro Rate: 5/5 Regression: Unconfirmed - Functionality is not implemented in previous version Skeletal Mesh with default slot Anim BP applied does not translate after Swap Root Bone on particular ...

Crash when placing a widget into a nested name slot that has been added via the user created section

UE - Editor - UI Systems - Jul 28, 2016

Crash when placing a widget into a nested name slot of another name slot. This occurs if this widget is then added to another widget and both the parent name slot and the child name slot receive chi ...

High Res Screenshot Tool Scene Color rendering washed out as EXR

UE - Graphics Features - Dec 8, 2015

When rendering out the Buffer Visualization Targets with the HDR setting on, the resulting Scene Color EXR is rendering significantly washed out compared to the Buffer Viz. in the Editor and if comp ...