Exported Morph target Animation sequences behaves differently in Max or Maya vs in UE4

UE - Editor - Content Pipeline - Import and Export - Sep 2, 2019

After invested, noticed that the exported morph target animation generated two separated Morph Modifier for each individual Morph Target in Max to achieve the final result instead of using only one ...

Editor compile failure in UnrealEngineHTML5 -- unsafe use of type 'bool'

UE - Platform - Mobile - Dec 4, 2019

Severity Code Description Project File Line Error ...

Same lightmap textures are listed mutiple times in Lightmaps of WorldSettings

UE - Rendering - Architecture - May 8, 2024

Same lightmap textures are listed multiple times in Lightmaps of WorldSettings. It seems that it just showes the same texture mutiple times but there is only one texture. [Image Removed] ...

Custom expression additional outputs don't work when connected to World Position Offset

UE - Rendering - Architecture - Materials - Jun 24, 2026

Custom expression additional outputs are considered (0,0,0) when connected to WPO. ...

Setup command not downloading GitDependencies on arm64 Mac

UE - Platform - Apple - Jul 26, 2023

When running setup command on an M1 arm64 mac the dependencies fail to download. This issue is occurring in Github //UE5/Release-5.3 @ CL 26560699 This issue is NOT occurring in Github //UE5/Rele ...

Search field in 'Quickly Add to Project' fails with Chinese Pinyin input unless manually focused

UE - AI Workflows - UI Systems - Localization - May 28, 2025

A licensee reported that under the Chinese language setting in UE5, using the “Quickly Add to Project” button results in incorrect or ignored input when entering text via Pinyin IME. If the user sta ...

Right click rename curve in Persona does not allow you to change the name of the curve on Mac

UE - Platform - Apple - Oct 24, 2016

The user is unable to right click to rename a curve on Mac as it immediately reverts to being uneditable. The user can double click to rename the curve. This does not occur on Windows. ...

Changing Physics Asset Constraints while playing in editor doesn't update actor in level

UE - Simulation - Physics - Sep 13, 2017

Changing a constraint setting on a physics asset while PIE doesn't automatically update the skeletal mesh actor in the level that is using it. If the user changes a setting that does cause a phys a ...