Niagara Simulation Stage + DynamicMaterialParameters crash

UE - Niagara - Feb 6, 2021

deleting the code "&& SimulationStages[i]->bEnabled" in UNiagaraEmitter::GetScripts will bypass the problem [Image Removed] ...

Creating a new project based on VR template requires user to compile DDC with installed engine

UE - Foundation - Build - Rocket (Installed Engine) - May 27, 2021

Found that with machines that have not created a project based on this template before that DDC needed to be compiled with an installed engine, while other machines that have created a project with ...

Ensure failing when skeletal mesh uses CapsuleIndirectShadow while Anti aliasing method is MSAA

UE - Platform - XR - Feb 23, 2023

Video of issue provided by licensee can be seen here - [Link Removed] ...

WPO is incorrectly generated on materials using Material Attributes as input to Landscape Layer Blend node

UE - Rendering Architecture - Materials - Jan 31, 2024

This comes from this UDN : [Link Removed] It occurs with this setup :  [Image Removed] , where Set Material Attributes expressions act as inputs to the Landscape Layer Blend material expression. ...

Missing display units initialization from project settings

UE - Editor - Workflow Systems - Jun 11, 2024

From customer: Hi there, I stumbled upon a bug where the display units as set in the Project Settings under the Editor Appearance category for properties were not getting displayed properly and was ...

Material Emissive Color not working with SkyAtmosphereIlluminance Material Expression

UE - Graphics Features - Jan 9, 2025

A licensee has reported that they are unable to use an emissive material utilizing the SkyAtmosphereLightIlluminance material expression together with Nanite and Lumen. The linked UDN has some more ...

Level viewport toolbar buttons on the right side are collapsed even if the viewport has enough width

UE - Editor - Applied Usability - Jan 21, 2025

The following worka round works :float SLevelViewportToolBar::GetTransformToolbarWidth() const { ... #if 0 // float ViewportToolBarWidth = static_cast<float>(GetCachedGeometry().GetLocalSize(). ...

Game sounds only play during first PIE editor session for Linux project

UE - Platform - Linux - May 11, 2015

Games sounds will play as appropriate during first PIE session but subsequent PIE sessions have no sound until editor is closed / reopened. ...

Joining a session in PIE with Auto Connect To Server disabled will crash PIE

UE - Networking - Nov 11, 2015

Joining a session in PIE with Auto Connect To Server disabled will crash PIE. Note: this is not specific to the Multiplayer Shootout project used in the repro steps; this will occur in any project ...