Unreal Engine Issues
Unreal Engine Issues
Spot Light USD Export Produces Incorrect Intensity Values Based on Cone Angle and Source Radius
UE - Editor - Open File Formats - USD - Apr 3, 2026UPDATE: Should be fixed as of CL#52537078 (fb7af1) USD: Bake all frames of exposure animation tracks. When exporting Unreal Engine spot lights from a level to USD, lights with identical EV intensit ...
Geometry Pen Tool Duplicates Bushes On Grid Size 1 & 5
UE - LD & Modeling - Modeling Tools - BSP - Mar 7, 2018There is an issue occurring when creating brushes with the pen tool at grid size 5 where verticles or the brush shape itself seems to be doubled. This issue also occurs if the grid size is 1, though ...
Editor crashes when importing 4.5.1 project to 4.6
UE - Gameplay - Blueprint - Dec 9, 2014The user converted a copy of their 4.5.1 project to 4.6. Upon opening that project, the editor crashes. Deleting certain widgets allows the user to open the project, but opening any map results in a ...
Separate Fill Alpha does not work on font outlines when outline size is set to 1
UE - Editor - UI Systems - Slate - Jan 16, 2017Font outlines render underneath the text, meaning that partially transparent text will allow the outline color to show through. This can be avoided by enabling Separate Fill Alpha. However, that opt ...
FBX sdk give wrong normals when compile with Visual Studio 17.4.1
UE - Editor - Open File Formats - Import and Export - Nov 24, 2022At the time this Jira is created, UE 5.1 and 5.2 is using VS 17.3.6 which is working correctly. any update after should repro the issue. ...
Cannot Package Game for Windows from External Drive on Windows 8.1 Boot Camp Mac
UE - Foundation - Core - Dec 17, 2014User is trying to package the xixoBerlinFlat Marketplace and cannot get a packged project from an external drive project on a Windows 8.1 x64 system running via Bootcamp on a Mac. ...
Manually changing the value for Constraint Value 1 & 2 causes odd visual issues
UE - Simulation - Physics - Jun 1, 2016Changing the values that govern what bones a constraint is suppose to be a joint between (Constraint Bone 1 & 2) will cause issues where the transform widget is moved to an appropriate location but ...
Debugging Motion Matching in 5.1, looping animations don't loop root correctly
UE - MVF Character - Animation - Jan 31, 2023Just trying a few simple animations in 5.1, I have a few short looping cycle animation that go in different directions. I see very bad results and it looks like it's because of how MM is assuming th ...
Open Sound Control Blueprint Plugin stops working around 1 minute during play
UE - Audio - Jun 3, 2020Messages are not received around 1 minute into playing when using OSC blueprint plugin. Test Project: [Link Removed] User workaround: https://forums.unrealengine.com/development-discussion/blu ...
FBX Import - 5.5.4 - Morph targets 1 frame offset
UE - Editor - Open File Formats - FBX - Feb 17, 2025Morph targets work! Yay! But found another issue. Basically import an fbx with multiple animated morph targets applied to it. The morph change shape over 1 frame and for some reason in 5.5.4, there' ...