Unreal Engine Issues
Unreal Engine Issues
Static Mesh Contact Shadows still render when all LOD sections have Cast Shadows dissabled
UE - Rendering - Graphics Features - Oct 30, 2025When the cast shadow checkbox is disabled for all sections that make up a static mesh the main shadow is no longer rendered but the contact shadow does not respect the instruction to disable shadows ...
'Hide Unconnected Pins' Button in the Blueprint Node Details Panel Disconnects SubPins with Connections
UE - Framework - Blueprint - Jan 14, 2026Given a get node with a struct output, if "Split Struct Pin" is used on the struct and one of that struct's outputs are connected to another node, it does not count as a used pin when the base get n ...
Blueprint Interfaces cannot pass by reference between two blueprints
UE - Gameplay - Blueprint - Feb 25, 2015Pass by reference variables do not work when called from a blueprint interface between two blueprints. Workaround: Use direct communication to pass by reference between two blueprints. ...
Crash When Raycasting Against Mesh With Multiple Materials
UE - Simulation - Physics - Feb 26, 2016When using a raycast trace against a blueprint that has a child component with multiple materials will cause the editor to crash after a few times. This will not be an instant crash, but requires th ...
ObjectPivotPoint does not work with instanced Nanite meshes
UE - Rendering - Architecture - Materials - Nov 17, 2022Regression: Nanite Foliage is a new feature in 5.1, so this issue is not reproduceable in 5.0. Notes about this new support can be found under Nanite Improvements in https://docs.unrealengine.com/5. ...
[CrashReport] UE4Editor_ShaderCore!FVertexFactory::SetPositionStream() [vertexfactory.cpp:218]
UE - Graphics Features - Aug 17, 2018User comment in crash group:error when i reimpot a mesh from a .fbx create in 3d max 213 void FVertexFactory::SetPositionStream(FRHICommandList& RHICmdList) const 214 { 215 ...
Blueprint Structure breaks when the Editor is closed and re-opened if the struct contains variables that are a Class Reference and a Soft Object Reference to a Blueprint
UE - Gameplay - Blueprint - Nov 8, 2018A struct containing variables that are a Class Reference and Soft Object Reference to a Blueprint no longer works after the project is closed and re-opened in the Editor. If a variable of the struct ...
Destructible Mesh spawned before static mesh with World or Asset support is not supported
UE - Simulation - Physics - Destruction - Apr 27, 2015When using World Support or Asset Defined Support on a Destructible mesh that is spawned in, if the static world geometry is spawned in after the DM it will not be supported. However, if the static ...
Non-reflected header files not recognized by UHT
UE - Foundation - Core - Jul 28, 2015A user adds 3 .h files though Visual studio where the first contains a struct, the 2nd includes the 1st, the 3rd includes the 2nd and tries to make a variable of the struct declared in the 1st. The ...
Duplicated PCG Component instance resets overridden parameters to default
UE - Graphics Tools - PCG - Components - Jun 4, 2025Context: Similar to parameters in the Material editor, PCG Graph Parameters are user created overridable values and can help create customizable graphs for a variety of situations. Problem: The l ...