Reimport for a single FBX with multiple meshes will add all mesh pieces instead of the single mesh.

Tools - Nov 21, 2016

When using a single FBX with multiple meshes that is imported as individual meshes, if you reimport after updating only a single mesh or a few of them the entirety of FBX will be imported and added ...

Point and Spot lights no longer work in Orthographic Projection Mode

UE - Graphics Features - Dec 30, 2016

Point and Spot Lights no longer work when using the Orthographic Camera Projection Mode. Note that the Directional Light still works as intended. This is a regression from behavior that worked in ...

ConstructorHelpers::FObjectFinder failing to compile with UPaperFlipbook

UE - Foundation - Core - Feb 21, 2017

If ConstructorHelpers::FObjectFinder is used with UPaperFlipbook as its class specifier, compiling the code fails with the following error: Error C2664 'void ConstructorHelpers::ValidateObject(UObj ...

All console variables overridden in Movie Render Queue are set to 0 after the render queue runs

UE - Anim - Sequencer - Aug 4, 2020

All console variables overridden in Movie Render Queue are set to 0 after the render queue runs. It's because all cached previous console variables are reset to 0 just before they are written back ...

Building development version on Linux fails due to iOS folder structure

UE - Platform - Linux - Jun 26, 2017

In the default Linux folder configuration, Engine/Source/Runtime/Core/Public contains two folders, iOS and IOS. The iOS folder contains the files IOSCriticalSection.h and IOSCriticalSection.h while ...

Persona code calling incorrect extenders when building menus.

OLD - Anim - Jan 25, 2017

Certain files for building menus is calling the wrong extenders List of known conflicting functions:FSkeletalMeshEditor::ExtendMenu() [Engine\Source\Editor\SkeletalMeshEditor\Private\SkeletalMeshEd ...

Some landscape grass instances floating when generated on AMD cards under OpenGL

UE - Graphics Features - May 15, 2015

User is reporting grass at the edge of their landscape being generated floating in the air on a Mac Pro with AMD GPUs. I have been unable to repro this on my Mac Mini with Intel Graphics HD 4000. Q ...

AnimCurveCompressionSettings is reset to CompressedRichCurve at editor startup

OLD - Anim - May 21, 2019

AnimCurveCompressionSettings's codec is reset to CompressedRichCurve when user open the project, so user can not keep the state changed to UniformlySampled. The following code in the constructor of ...

[GPU Lightmass] bake artifact w/ two actors of same static mesh

UE - Graphics Features - Jun 22, 2022

As per a bug report from Pixomondo: if there are two static meshes in the scene and one has a rotation, it gets a GPULM bake artifact as if it is intersecting with the unrotated version of itself. S ...

Clicking a dropdown menu inside of a blueprint node while zoomed out will cause the list to be cut off

UE - Gameplay - Blueprint Editor - Oct 24, 2016

When you are zoomed out when clicking a dropdown box on a blueprint node, the dropdown menu gets cut off on length and width. Length isn't that big of a deal as you can scroll but it does cut off th ...