Cannot disable the NavLinkProxy through the Smart Link option

UE - AI - May 6, 2015

Cannot disable the NavLinkProxy through the Smart Link option. If this is not the proper way to disable the NavLink, users are confused by the naming of 'Link Enabled'. ...

"Combine Meshes" Breaks Material Slot Assignment

Tools - Jan 18, 2017

When importing an FBX with several different meshes and multiple materials with "Combine Meshes" enabled the materials will get assigned to incorrect portions of the mesh. I've included a version o ...

Gradle AAR repository directories with $S(PluginDir) are relative instead of absolute path

UE - Platform - Mobile - Aug 1, 2017

Gradle AAR import paths need to be absolute instead of relative since the current work directory used to package Gradle is not the same as Ant. ...

[CrashReport] UE4Editor_SlateCore!TArray<FHittestGrid::FCachedWidget,FDefaultAllocator>::Empty() [array.h:1530]

Tools - Nov 10, 2017

This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Nearly all affected project names reference that this occ ...

If the DataLayerAsset name or asset path changes, Actors registered to it will ignore the DataLayer's settings

UE - World Creation - Worldbuilding Tools - Feb 5, 2023

If you change the DataLayerAsset name or asset path, all Actors registered with that DataLayer will ignore that DataLayer's settings. Specifically, even if you set the DataLayer to the Unloaded stat ...

Bug when trying to Ctrl+Z after Replace Actors

UE - Editor - Workflow Systems - Dec 22, 2023

From the UDN case #00649142: My team noticed a bug where sometimes when using "Undo" (Ctrl+Z usually) the BP they are working on disappears in the level. We were able to find a 100% repro case when ...

MakeEditWidget doesn't work with the blueprint editor viewport

UE - Framework - Blueprint Editor - Dec 19, 2024

Using the MakeEditWidget specifier inside a UPROPERTY macro and creating a blueprint based on the class will show the translation gizmo inside the main editor viewport but the gizmo will not show up ...

MetaSounds isn't working with Modular Game Features - LogMetaSound: Error: Target interface is not registered

Audio-Gameplay-Engineering - Nov 22, 2022

Reproduced 3/3 times. Issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. Errors:[2022.11.22-18.11.28:472][  0]LogMetaSound: Error: Target interface is not regi ...

Divergent group barriers in Lumen

UE - Graphics Features - Lumen - Apr 23, 2025

Intel reported GPU crashes on their hardware caused by divergent group barriers in ScreenProbeConvertToIrradianceCS:[numthreads(THREADGROUP_SIZE, THREADGROUP_SIZE, 1)] void ScreenProbeConvertToIrra ...

When use Sequence Camera Shake Pattern, Level Sequence occurs error

UE - Anim - Sequencer - Mar 28, 2022

When I apply the Sequence Camera Shake Pattern to a Sequencer's camera, I get an error when playing it. ...