Unreal Engine Issues
Unreal Engine Issues
Landscape with increased scale value does not sculpt with low strength brushes
UE - LD & Modeling - Terrain - Landscape - Dec 18, 2014A landscape that has been increased in scale by using the Transform values of the Detail's pane does not allow small brushes with low strength to sculpt them. ...
Texture Group MaxLODSize doesn't recognize changes to WorldNormalMap in DefaultDeviceProfiles.ini
UE - Foundation - Core - Nov 11, 2019When trying to change the MaxLODSize using DefaultDeviceProfiles.ini, some of the groups scale but others don't. This was reported and tested in 4.23.1 (CL-9631420). This was reproduced in 4.22.3 ...
Inverted normals with Datasmith .STP import
UE - Editor - Content Pipeline - Datasmith - Importer - Jan 15, 2020When importing this .stp file through Datasmith, the normals are inverted upon import. Attached are screenshots of the normals in AutoDesk Alias and McNeel Rhino. This was reported and tested in 4 ...
Sequencer Frames Render Black When Four or Less Frames Are Rendered
zComponent - Archive - Apr 22, 2022Occurs: 5/5 times **MRQ renders black frames when custom playback range is set to four frames or less. Regression does not occur: tested using //UE4/Release-4.27 @ CL 18429761 GH Note: Issue does ...
OverrideVertexColor causes a crash on mobile renderer
UE - Platform - Mobile - Graphics - Jan 8, 2026Setting Allow CPU Access on the mesh, or setting bSupportsManualVertexFetch=1 in Engine.ini, avoids the crash. ...
Local Exposure can cause large variations in PreExposure under certain conditions
UE - Rendering - Features - Sep 16, 2025PreExposure is influenced by LocalExposure in PostProcessEyeAdaptation.cpp:1265. It appears when the scene is particularly dark and using manual exposure, the LastAverageLocalExposure can read a lar ...
Motion Matching FPS instability causes jittering when using the root offset node
UE - MVF Character - Animation - Feb 23, 2026Offset root node is affected by frame rate and produces jitter in it's motion across various settings and styles. ...
Expanding a folder in the Finder through the editor will crash the editor
UE - Platform - Apple - Mar 16, 2015Expanding a folder in the Finder through the editor will crash the editor. Reproduced in 4.7.2 binary on 10.9.5 Crash Report: [Link Removed] ...
GPU particles disabled on Quest
UE - Rendering - Architecture - Niagara - Feb 9, 2024GPU particles were disabled on Quest 1 due to a compute issue. We need to validate / fix issues for Quest 2 / Quest 3. Reported in [Link Removed] ...
All Vive Trackpad Inputs Send The Same Input
UE - Platform - XR - Jan 13, 2020The vive trackpad inputs all read as the same input. Found in 4.24.1 Reproduced in 4.25 Main ...