Substrate Add node only adds the first Substrate Slab's Emissive value when "Use Parameter Blending" is enabled

UE - Graphics Features - Substrate - Jan 10, 2025

As per the steps to reproduce, the Substrate Add node only adds the first Substrate Slab's Emissive value when "Use Parameter Blending" is enabled. Leaving "Use Parameter Blending" unchecked on the ...

Discrepancy in FBX import on animations

UE - Editor - Content Pipeline - FBX - Mar 19, 2025

In the attached screenshots, the following Animation Sequence assets are wrong: * FX_WST050_pSphereB1_TS_AnimFX_WST050_pSphereC1_TRS_AnimFX_WST050_pSphereC1_TRS_AnimFX_WST050_pSphereD_TR_Anim If yo ...

Spawning Instanced Meshes with Multiple Collisions Produces Error Log Spam

UE - Gameplay - Jun 24, 2015

Constructing instanced meshes with multiple collision components spams the output logs with error messages. ...

"Activate Touch Interface" crashes the editor when set to 'None' in editor

UE - Gameplay - Input - Dec 5, 2014

If the 'Activate Touch Interface' node is called in blueprints (set to a non-'None' interface) and the current touch interface is set to 'None', the editor crashes. ...

Tool tips on the main monitor scale to the DPI of the secondary monitor.

Tools - Aug 2, 2016

If the user has different DPI Scaling set on each monitor, the main monitors tool tips will change size based on the secondary monitor. ...

UFunctions using the exec specifier are recognized by UHT when building for Development even if they are in a #if WITH_ENGINE

UE - Foundation - Core - Aug 19, 2015

If a user declares a UFunction with the exec specifier, the UHT will add a call to that function so that it can be used as a console command in the editor. This becomes an issue when the declaration ...

Upgrading Project to a New Engine Version Causes Errors When Attempting to Open Tutorial Blueprints

UE - Gameplay - Nov 11, 2015

When you create a project in version 4.8.3, and update it to either 4.10 or Main, there seem to be issues loading the Engine Content Tutorials for FeaturePacks, InstallingiTunesTutorial, and Setting ...

Runtime memory leak with imported FBXs

Tools - Feb 6, 2017

When a certain kind of mesh is loaded/unloaded at runtime from transitioning levels, the amount of unfreed memory of the game will steadily increase. There is some natural fluctuation of memory but ...

Default value for BP struct within BP struct not set

UE - Gameplay - Blueprint - Dec 15, 2017

If I set a certain default value for a struct within another struct, it is reset to "None" and the value is not accepted. Below are detailed steps to reproduce as well as a minimal project. Source: ...

Preview Asset Becomes Detached from Socket When Renamed

Tools - Dec 28, 2017

4.17: The preview mesh disappears entirely when the name of the preview asset is changed When a preview asset is applied to a socket, and the socket is renamed, the preview asset becomes detached ...