Nanite compute materials don't work with VolumetricLightmap

UE - Graphics Features - Nanite - Jun 25, 2024

Cannot Assign Clothing Asset after creating it

UE - Simulation - Physics - Character - May 12, 2017

Cannot Assign Clothing Asset after creating it ...

NetMulticast and BlueprintCallable C++ functions reportedly have incorrect parameters

UE - Networking - Nov 7, 2014

Bug report from AnswerHub. Need to figure out why C++ functions tagged NetMulticast and BlueprintCallable send the wrong paramters to some clients. ...

Importing skeletal mesh with LODs and uniform scaling results in multiplicative scale per additional LOD

Tools - Feb 22, 2017

Here's a quick chart showing the current multiplicative pyramid style scaling that's occurring.Import ScalingLOD0LOD1LOD2LOD32.0248160.50.50.250.1250.06255.0525125625 ...

4.22.1 Crash in FVulkanResourceMultiBuffer::Lock

UE - Rendering Architecture - RHI - Jul 31, 2019

Vulkan Multibuffer Lock mechanism for ReadOnly does not appear to be implemented. Temporary workaround has been provided to licensee. ...

[Standalone Installer] The binaries for Mac are missing

UE - Editor - Content Pipeline - Datasmith - Installers - Mar 1, 2022

[AI] SmartObjectSlot does not have a valid node ref even when it should project to navigation.

UE - AI - SmartObject - May 17, 2025

If you request a SmartObject slot entrance location and require it to be navigable, it will return a result that does not include the node ref of the nav poly for the entrance to the slot. Instead i ...

Data entry field for blueprint Array Add is uneditable until the Add is copy and pasted

UE - Gameplay - Blueprint Editor - Sep 5, 2016

Data entry field for blueprint Array Add is uneditable until the Add is copy and pasted, this also occurs if you add an array via right click Array and then link a variable to the array ...

Compiling on Mac fails if build path has spaces

UE - Platform - Apple - Jan 6, 2015

UPDATE: We were able to get around this issue by renaming our external drives. The actual problem is that Mono's xbuild fails to build UnrealBuildTool QA REGRESSION: YesWORKING: 2386770BROKEN: 23 ...

Specular Highlight Much Stonger/Larger In Forward Shading

UE - Graphics Features - May 15, 2017

In forward shading specular highlights appear to be much larger for very smooth materials in contrast to the deferred shader. In 4.14.3 the specular highlights were displaying correctly in forward s ...