Metal crash after painting 300 Foliage meshes onto a surface

UE - Graphics Features - Oct 4, 2017

Encountered a Metal crash when painting Foliage on Mac. I'm unable to reproduce anything similar on Windows. This crash can occur if the user drags a Static Mesh into the Foliage Panel or uses an e ...

Importing FBX creates new materials when using the search materials import setting

UE - Editor - Content Pipeline - Import and Export - Nov 1, 2017

There is an issue when importing FBX that creates new materials when using the search materials import setting. Instead of being able to use the material that is in the Base Material name, the textu ...

Assign Event On Destroyed no longer creates Custom Event Node

UE - Gameplay - Blueprint Editor - Oct 9, 2018

When creating a new Blueprint Class based on an Actor parent, If you navigate to the Actor's event graph, and right click on the editor blank space;  type "Assign on Destroyed"  and select  "Assign ...

Crash: Unhandled exception UE4Editor_Renderer!FMobileBasePassMeshProcessor::Process

UE - Graphics Features - Mar 14, 2019

HUD can cause a crash when used with Mobile. "When running from visual studio exception happens here: https://github.com/EpicGames/UnrealEngine/blob/4.22/Engine/Source/Runtime/Renderer/Private/Mobi ...

Crash when using both tessellation and virtual texture on a landscape material

UE - LD & Modeling - Terrain - Landscape - Feb 11, 2020

When a landscape is set up to use runtime virtual texturing. If it uses a material that writes to a runtime virtual texture and has tessellation enabled. Then we see a crash and the log reports: ...

Activate Reverb Effect node fails to activate when placed behind a Delay node

UE - Audio - Feb 3, 2021

It seems that the Activate Reverb Effect node is no longer functioning when put behind a Delay node. In the test project, there is an empty actor with a Event Begin Play connected to a Delay node wh ...

Crash when spawning multiple HISM at runtime in a packaged shipping build

UE - World Creation - Worldbuilding Tools - HLOD - Feb 25, 2021

When adding multiple Hierarchical Instanced Static Meshes on a loop and packaging the project in Shipping configuration the application crashes due to LowLevelFatalError [Link Removed] [Line: 1431] ...

Disabling DFAO prevents landscape from contributing to Lumen scene

UE - Graphics Features - Lumen - Oct 10, 2023

From licensee: We disabled DFAO on our project (using r.DistanceFieldAO 0) to replace it with Lumen occlusion, as the combination of both was creating dark blobs under bushes and grass. However, we ...

Warnings after Launching onto Mobile

UE - Platform - Mobile - Oct 27, 2016

Launching onto android causes 1-3 warnings in the output log. I ensured that the mobile device was connected to Epic-Secure. LogTcpMessaging:Warning: Discovered node '00529FEE320A011C0032002F8B3E2F4 ...

Collapsed component hierarchy expands when placing component in Widget Hierarchy panel

UE - Editor - UI Systems - May 17, 2017

A collapsed component hierarchy expands when placing a component in Widget Hierarchy panel. This issue seems similar in nature to [Link Removed], but the test case for this issue id different, and f ...