Unreal Engine Issues
Unreal Engine Issues
Missing materials on the rear lights and windows of library vehicles
TM - Content - Oct 24, 2025Reported in SF [Link Removed] The rear light material and window materials on Twinmotion library vehicles are not present on many vehicles in TM 2025.2. Confirmed affected vehicles are in the foll ...
UE4Editor is crashing after user builds lighting
UE - Graphics Features - Lumen - Jul 22, 2020Issue reported by user that they are experiencing consistent crashes in UE4Editor have building lighting. ...
Crash enabling Stochastic Rect Light with Ray Tracing
UE - Graphics Features - Lumen - Oct 13, 2020Enabling Stochastic Rect Lights with Ray Tracing causes the project to crash. Reported and tested in version 4.26.0(CL 14419252). Tested and not found in version 4.25.3(CL 13942748). ...
No Set function for TextRenderComponent::VerticalAlignment variable
UE - Graphics Features - May 25, 2016There is no set function for the vertical alignment variable in TextRenderComponent.h meaning the variable must be set directly. This is inconsistent since there is the SetHorizontalAlignment() fun ...
Crash when calling a RPC function with a TSet or TMap parameter on a client
UE - Networking - May 11, 2018Calling a RPC function with a TSet or TMap parameter on a client causes the editor to crash. Regression?: No This also occurs in 4.18 ...
Mover plugin: Crash on UFloorQueryUtils::ComputeFloorDist() and other utility functions that assume the pawn uses a UCapsuleComponent
UE - Gameplay - Player Movement - Mover - Dec 4, 2025The following functions have been found to perform unchecked casts of the pawn's "UpdatedComponent" to class UCapsuleComponent, possibly resulting in crashes:UFloorQueryUtils::ComputeFloorDist()UGro ...
Instanced Stereo setting crashes engine when building lighting, creating a vector3 or disabling setting
UE - Platform - XR - Apr 4, 2022After further investigation we noticed that the issue is arising from the Instanced Stereo setting. When creating a Vector3 in a new material, building lighting or disabling the Instanced Stereo set ...
GI Indirect Lighting Intensity No Longer Influences Reflection Capture
UE - Graphics Features - Nov 21, 2016The post process setting "indirect lighting intensity" no longer influences the brightness of reflections created by reflection capture actors. ...
Unable to save Blueprint Function Library if it references a string table entry
UE - Editor - UI Systems - Localization - Apr 4, 2019Regression. Function library saving crashes if it references to a string table entry. ...
Specular Scale 0 on Light still affects Groom asset
UE - Rendering Architecture - Jul 30, 2025When a light's Specular Scale is set to 0, the specular still affects hair / groom assets. The specular of other assets (like a shiny static mesh in the scene) is properly affected by the change. ...