Material re-route nodes break TextureSample output

UE - Rendering Architecture - Materials - May 4, 2017

This is a bug found by a licensee ...

Crash on packaged game. 4.23 will not nativize a class that creates instanced properties inside itself

UE - Gameplay - Oct 1, 2019

Description from the user: up to 4.23 properties nativize normally if they are written in C++ with the Instanced specifier. The discerning difference is that that there was no Blueprint Class itsel ...

Steam VR client crash when connecting to Server

UE - Platform - XR - Jan 6, 2020

Client crashes when connecting to server on Vive. Did not reproduce with Oculus Rift. ...

MoviePipeline: Cannot add per-shot {file_format} name overrides

UE - Anim - Sequencer - MRQ - Feb 3, 2022

void UMoviePipelineBlueprintLibrary::ResolveFilenameFormatArguments(const FString& InFormatString, const FMoviePipelineFilenameResolveParams& InParams, FString& OutFinalPath, FMoviePipelineFormatArg ...

[MetaSounds] - Changes to Sort Order do not undo/redo as expected

UE - Audio - MetaSounds - Nov 15, 2022

Changes to the sort order do not revert the order of inputs on a node when undone. It will change if the node is refreshed or the graph is saved, however. ...

Regression: FGameplayTag and FGameplayTagContainer pin value modification is not undo/redoable

For nodes with an FGameplayTag or FGameplayTagContainer pin, when changing the tag value (Pin->DefaultValue) and triggering Undo/Redo, the pin modification is not undone. Rather, it undoes the previ ...

Lumen ignores Landscape Holes (Landscape Visibility) when Hardware Ray Tracing is enabled and Ray Lighting Mode is set to Surface Cache

UE - Graphics Features - Ray Tracing - Jan 31, 2025

Context Lumen is the default global illumination and reflections system. Lumen renders diffuse interreflection with infinite bounces and indirect specular reflections in large, detailed environments ...

TRASH_Comp in Octree that missing unregister

UE - AI - Navigation - Feb 25, 2025

the reproduce video and project are in the slack links: Slack Link: [Link Removed] ...

Landscape Grass Type will not build with static lighting leaving 'Lighting needs to be rebuilt warning.'

UE - World Creation - Worldbuilding Tools - Foliage - Sep 3, 2015

When using the Landscape Grass Type and using a Static or Stationary light will throw the 'Lighting needs to be rebuilt' warning. ...

Cannot compile project with dedicated server in 4.8

UE - Networking - Jun 23, 2015

If a project has built a dedicated server executable then it will fail when trying to convert the project from 4.7.6 to 4.8. EDIT: Following the steps on the wiki page for Dedicated Servers () in 4 ...