CCD can produce incorrect results at low frame rates

UE - Simulation - Physics - Feb 27, 2019

The attached project has a fixed frame rate of 30fps with a simulating CCD cube above a with a full restitution floor. The cube has an odd rotation, such that it impacts the floor at a single point ...

Undo and ConstructionScript break the AttachChildren array

UE - Gameplay - Components - Nov 14, 2019

Undo fills AttachChildren array with null by the undo serializer. After that, a construction script tries to remove child components from parent component's AttachChildren but it can't find its poi ...

Skybox Textures Have a Seam When Using a Cube With Inverted Normals

UE - Graphics Features - Feb 14, 2020

Skybox textures can have a seam when using an inverted cube for a sky. Attached is an example 4.24.2 project. Note: One of the attached seam screenshots is hard to see unless you expand it. Found ...

Depth Not Rendered Correctly When Using CustomProjectionMatrix in SceneCaptureComponent2D

UE - Graphics Features - Apr 15, 2020

The depth is rendered incorrectly when using a custom projection matrix in SceneCaptureComponent2D. You can find an example project at [Link Removed]. You can find where the CustomProjectionMatrix ...

Localization working only in Standalone, Changes default language in Viewport

UE - Editor - UI Systems - Localization - Oct 15, 2020

Localization is unintentionally changing UE default language to pt-BR when in viewport. This results in having to Stop, repeat steps, and select en to reset language to en. It does not change langua ...

FConsoleVariableBase::SetOnChangedCallback behaves incompatibly with previous versions

UE - Niagara - Jun 17, 2021

FConsoleVariable::OnChangedCallback was changed to a multicast delegate in 4.26. Along with this, FConsoleVariableBase::SetOnChangedCallback was implemented to emulate a single delegate for compatib ...

Display Blueprint Added Components on subobjects with meta = (ShowInnerProperties)

UE - Framework - Blueprint Editor - Sep 28, 2021

Right now only native subobjects are displayed in the details panel with meta = (ShowInnerProperties) is set. Child Actor Components are an example of this, where if the child actor you have added h ...

Capsule Indirect Lighting with ILCQ Volume breaks on Skeletal Meshes when making Sublevel visible not in the current Camera Frustum

UE - Graphics Features - Apr 12, 2017

When using Capsule Indirect Shadows for Skeletal meshes who have their ILCQ set to Volume, and loading a SubLevel with it's actors not within the current camera's view, the indirect lighting is blac ...

Full Screen Native Resolution not supported on new iPad Pro 11-inch and iPad Pro 12.9 inch (3rd generation)

UE - Platform - Mobile - Nov 16, 2018

A licensee has reported that Full Screen native resolution does not work properly on the iPad Pro 11-inch and on the iPad Pro 12.9-inch (3rd generation). Black borders are used around the screen ins ...

Packaging that involves a compilation process causes custom icons to not show in the taskbar on Windows in Binary

UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 30, 2018

Packaging that involves a comilation process in the Binary editor causes custom Windows icons to be ignored in packaged games. This could either be seen in a Code project or in a Blueprint Only proj ...