Some texture files cannot be exported from the editor

Tools - Feb 4, 2015

There are instances where some texture files cannot be exported from the editor. In this older post a user had reported this with the file T_Sky_Blue from the engine folder. Only this file has been ...

Invisible child components appear for one frame on scene capture 2D windows if another component is attached.

UE - Gameplay - Oct 1, 2015

Invisible child components appear for one frame on scene capture 2D windows if another component is attached. ...

CapsuleComponent with CCD on will push and pull any simulated physics objects when close but not in contact with the capsule

UE - Gameplay - Jul 21, 2015

When using a capsule component for the character with CCD enabled there can be a force that pulls or pushes simulated meshes that are never touched by the capsule. Demonstration video attached. As ...

Custom Node plugged into World Displacement cannot convert from FMaterialTessellationParameter to FMaterialPixelParameter

UE - Graphics Features - Nov 30, 2015

Custom Nodes plugged into World Displacement are yielding:Error [SM5] error X3017: 'CustomExpression1': cannot implicitly convert from 'struct FMaterialTessellationParameters' to 'struct FMaterialP ...

Physic Constraint movement is quadratic where previously it was spherical

UE - Simulation - Physics - Apr 6, 2022

Physic Constraint movement is quadratic where previously it was spherical. ...

AreaFlags Empty During First PIE Session After Hot Reloading

UE - AI - Dec 12, 2016

AreaID always seems to be empty during the first PIE session after hot-reloading. Only able to test in Dev-Framework CL# 3221683 due to the licensee's project being created in 4.15 and not being b ...

ObjectPivotPoint does not work with instanced Nanite meshes

UE - Rendering Architecture - Materials - Nov 17, 2022

Regression: 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, 2018

User 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, 2018

A 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 ...

Non-reflected header files not recognized by UHT

UE - Foundation - Core - Jul 28, 2015

A 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 ...