FCanvasTriangle Item not accepting information from material Vertex Color

UE - Gameplay - Jul 15, 2015

From a Draw Material Triangle you cannot use a Material calling vertex color and the provided Vertex Color Pins to yield color on the HUD drawn triangle. It will always appear White. [Image Remove ...

Collision Channel on Particle Systems not saving

UE - Graphics Features - Oct 21, 2014

Setting the Collision Channel to anything other than World Static will reset on closing and restarting the editor. ...

Networked Root Motion Sources can experience desynchronisation that is not present in animation root motion under forced adjustment

UE - Gameplay - Player Movement - Feb 13, 2024

In a networked environment with high packet loss (or high forced adjustment factor), motion applied using Root Motion Sources can desynchronise under conditions that animation root motion does not. ...

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 ...

Removing Pose from Blend by Enum causes compile error with float defining blend time

OLD - Anim - Sep 16, 2015

Removing Pose from a Blend by Enum node can cause compile errors when a float is defining all of the blend times. ...

Blueprint Library plugin set to 'Runtime' doesn't work in Standalone/packaged builds if used inside of the 1st Person Character BP

UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 18, 2016

Blueprint Library plugin set to 'Runtime' doesn't work in Standalone/packaged builds if used inside of the 1st Person Character BP. User Description: Blueprint libraries are still broken in the fi ...

Destructible attached with a Physics Constraint ignores Start Awake on play

UE - Simulation - Physics - Destruction - Jul 26, 2016

Destructible attached with a Physics Constraint ignores Start Awake on play The Destructible component is set to simulate physics, but on play physics is not simulated unless the destructible is to ...

[CrashReport] UE4Editor_Landscape!FLandscapeComponentSceneProxy::DrawStaticElements() [landscaperender.cpp:1631]

UE - LD & Modeling - Terrain - Landscape - Nov 5, 2018

User comments in crash group:Enabled Flat Tesselation on a Terrain Material.I saved the material. 1628 if (HasTessellationEnabled) 1629 { 1630 ***** UMaterialInstance* NonTess ...

"Out of video memory" crash when attempting to save many assets with source control enabled

UE - Graphics Features - Sep 25, 2020

This will only repro when connected to source control ...

When IOStore is enabled, -createchunkinstall separates out chunk-non-0 pak files but not utoc/ucas files

UE - Foundation - Data Pipeline - Cooker - Dec 12, 2022

The -createchunkinstall option is used to separate out chunk>0 CDN/patch data from the main packaged app, but when using it with the IOStore enabled, only the pak files are separated out but not the ...