SceneCapture2D Components when referenced on screen by UI widget will cause massive screen flickering in Standalone, Launched or Packaged Game

UE - Graphics Features - Feb 10, 2016

When a SceneCapture2D actor is added as a Component to a Blueprint actor and the Render Target is assigned to a UI component in the level, the screen flickers at a rapid pace. The effect is slightl ...

Camera Shake Oscillation Duration no longer accepts -1 as indefinite

UE - Gameplay - Jul 30, 2015

The Camera Shake Class no longer allows for indefinite shaking via setting a negative value in the Oscillation duration, per the tooltip instructions. This happens when using either the Play World ...

Lumen screen traces from hair cast noising moving shadows on faces

UE - Graphics Features - Lumen - May 17, 2024

There is moving blotchy noise on the head and face from hair when Lumen HZB tracing hits hair.  CL 33258050 fixes the noise in the hair, but tracing still hits hair when it starts from surfaces like ...

Foot Placement tries to step on vertical surfaces

UE - Anim - Gameplay - Oct 31, 2023

From a community member: Are you responsible also for the FootPlacement node? Its fantastic, but there is a possible bug with the walkable surface handling. It tries to step even on vertical surfac ...

Crash occurs when trying to edit a MetaSound Source asset while a MetaSound Source object is referenced utilizing FObjectFinder in C++

UE - Audio - MetaSounds - Apr 14, 2022

Crash occurs when trying to edit a MetaSound Source asset while a MetaSound Source is referenced utilizing FObjectFinder in C++ Repro Rate: 3/3Fatal error: [File:D:\build\++UE5\Sync\Engine\Source\R ...

Many native-only interfaces incorrectly appear as implementable by blueprints

UE - Gameplay - Blueprint - Sep 14, 2020

Right now, any UINTERFACE that is not marked as CannotImplementInterfaceInBlueprint is shown as implementable in blueprint. If these functions have BlueprintCallable functions or related things then ...

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self (4.8)

UE - Gameplay - Blueprint - Jan 20, 2015

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self. Without one, the BP fails to compile with the following error: "Error Variable node Get NewVa ...

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self

UE - Gameplay - Blueprint - Jan 9, 2015

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self. Without one, the BP fails to compile with the following error: "Error Variable node Get NewVa ...

FPS drop when deploying to a Mobile device

UE - Platform - Mobile - Feb 27, 2015

The FPS drop off of this users project is significant between version of UE4. I tested this issue on a Samsung Galaxy Note 10.1 2014 edition. I also tested on a iPad air 2 on 8.1. There was a sig ...

Regression: FAnimInstanceProxy memory leak when BeginDestroy() called on UAnimInstance before USkeletalMeshComponent

UE - Anim - Runtime - Feb 10, 2025

In UE 5.5, the fix applied by CL 36529858 in ue5-main updated USkeletalMeshComponent::ClearAnimScriptInstance() to call AnimScriptInstance::UninitializeAnimation() on the animation instance. This, i ...