Typo in the tooltip for the DynamicBranch node results pin

UE - Content - Engine - Feb 22, 2016

The Tooltip for the Results Pin of the DynamicBranch Material node incorrectly says that Color Input 1 will render if the Alpha is greater than 1, but the setup is for greater than 0. [Image Remove ...

[CrashReport] Linux Crash in FActiveSound::GetWorld()

UE - Platform - Linux - Aug 11, 2017

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: SIGSEGV: invalid attempt to write ...

Get Material Instance ___ Parameter Value not working for Blend Parameter

UE - Rendering Architecture - Materials - Dec 2, 2022

Reproduced 3/3 times, issue also occurs in //UE5/Release-5.0 - CL 20979098 Binary. Confirmed NOT a Regression. ...

[CrashReport] UEdGraphSchema_K2::PinHasSplittableStructType

UE - Gameplay - Blueprint - Sep 14, 2017

This crash is affecting a few users in 4.17. ...

Google VR Plugin - Unable to package for Distribution

UE - Platform - Mobile - Oct 19, 2018

There is an issue with GoogleVR and Android SDK 26 that only occurs when packaging "For Distribution", possibly connected to the SDK 26 change regarding the UiLayer for VR mode. Packaging without Di ...

Spline mesh crashing in FRayTracingDynamicGeometryCollection::AddDynamicMeshBatchForGeometryUpdate

UE - Graphics Features - Ray Tracing - Jan 31, 2025

A crash occurs when using ray tracing with spline meshes preceded by the following ensure : Ensure condition failed: NumCPUVertices <= VertexBufferNumElements  File: Engine\Source\Runtime\Renderer\ ...

Fringe Saturation in Post Process Volume not functioning

UE - Graphics Features - Jul 27, 2015

Setting the values for Fringe Saturation within the Post Process Volume does not seem to have any visual change. The documentation suggests that changing the Fringe Saturation will either increase ...

Popping Ribbon UVs

UE - Niagara - Mar 10, 2025

Please see the Additional Link for related UDN information. The UV popping described can be subtle, depending on settings; it's affected by spawn rate and GPU vs CPU. The popping shown in the gif t ...

Crash happens when changing Animation Mode to any other mode while a Control Rig is selected.

UE - Anim - Rigging - Control Rig - May 17, 2022

This is a regression. Tested in //UE4/Release-4.27 CL18319896 An assertion is thrown when changing Animation Mode to any other mode while a Control Rig is selected. ...

Spotlights Transform Strangely When Scaled Within A Blueprint

UE - Graphics Features - Oct 31, 2016

When scaling an actor with a spotlight component that is offset from local 0,0,0 the spotlight will invert itself when passing into negative scale values. In the test project this only occurs on the ...