Exporting to FBx nanite staticmesh, export the low res fallback LOD 0

UE - Editor - Content Pipeline - Import and Export - Dec 7, 2022

The exporter export the render data and the nanite render data is on the gpu and is not accessible, this is why it export the fallback mesh. Its more complex then it appear since we will need to do ...

Long delay on iOS Device Output Log can cost loss of logging on some devices

UE - Platform - Mobile - Feb 8, 2019

If the delay to begin printing the log to the window is too long, some of the logging can be thrown out. This issue does not occur with Android Device Output log UPDATE1: The last time I reproduce ...

Unexpected Specular Highlights using Area Lights on Surfaces with strong Normals at Low Glancing Angles

UE - Graphics Features - Apr 17, 2017

A licensee is reporting shimmering specular highlights on the surface of a mesh with an Area Light while using MSAA, FXAA, or no AA settings. This occurs in the Forward and Deferred Renderer. It wa ...

Unloading a level instance by data layer creates empty folders in the top level of the outliner

UE - World Creation - Worldbuilding Tools - Level Instances - Jun 22, 2023

The "Project World location to Widget position" node does not return the correct screen position unless the widget's anchor point is set to the top left

UE - Editor - UI Systems - May 26, 2015

When using a widget that has an anchor point that is not set to the upper left the "Project world location to widget position" node does not return the expected location on screen. ...

Investigate Tessellation Performance on Landscape

UE - LD & Modeling - Terrain - Landscape - Apr 22, 2015

I have been seeing a few answerhub threads about very low performance on tessellation with landscape. What is puzzling is that it does not seem to change performance whether low or high tessellatio ...

Material expression If node has been broken, major regression that shipped in 4.6

UE - Graphics Features - Dec 9, 2014

This sounds legit. Anyone mess with the if node recently? There seems to be a regression where existing content is broken. This should be fixed ASAP and patched into 4.6. https://forums.unrealen ...

Sequencer - When a subsection has negative play rate, any nested sub-subsections fail to evaluate

UE - Anim - Sequencer - Jul 3, 2025

Consider a sequence hierarchy with more than two layers. If the top-level sequence uses a negative timescale on a sub-sequence, the contents inside it animate as expected, but any nested sub-sequenc ...

FOnlineExternalUISteam::ShowWebURL doesn't react correctly to URLs with http:// as the protocol

UE - Networking - Dec 17, 2015

Code for this function below:bool FOnlineExternalUISteam::ShowWebURL(const FString& WebURL) { if (!WebURL.StartsWith(TEXT("https://"))) { SteamFriends()->ActivateGameOverlayT ...