Landscape smooth and flatten tools deform the terrain incorrectly

UE - Graphics Tools - Terrain - Landscape - May 25, 2022

The Landscape smooth and flatten tools can deform the landscape incorrectly causing chunks of the landscape to be removed (see attached image). ...

HighResScreenshot crashes in windows packaged exe

UE - Rendering Architecture - Mar 22, 2023

FHighResScreenShotConfig::Init() sets the materials only in the Editor, due to a #if WITH_EDITOR block. However, the FViewport class exposes the TakeHighResScreenShot to non-editor builds as well, l ...

drag the progress bar in level sequence would crash in debug editor

UE - Anim - Sequencer - Aug 17, 2023

it seems in FSequencerTimeSliderController::ComputeFrameTimeFromMouse the CursorPos is -nan ...

Case Child Actor Component validation error when set as editor-only

UE - Framework - Components - Jun 4, 2024

When a blueprint actor with a child actor component is placed in a level, and the child actor component is set as editor-only, the output log will show a validation error when the actor is moved and ...

Curve Table Editor's "Add Key" functionality does not work and appears to not be implemented..

UE - Editor - Workflow Systems - Aug 5, 2024

Creating a new Curve Table asset, and then trying to use the right-click menu "Add Key" option does not do anything. FRealCurveModel still has the function, but it is left intentionally empty despit ...

All objects imported through Interchange use smooth shading.

TM - Interoperability - Dec 7, 2023

[Image Removed] It imports correctly in UE with interchange import:[Image Removed] ...

Structured log automated decimal number tests fail in languages / cultures that use commas instead of periods

UE - Foundation - Jul 17, 2025

The following Localisation Tests in "Engine\Source\Runtime\Core\Tests\Logging\StructuredLogFormatTest.cpp:275" TestLoc(LOCTEXT("Float", " {Float} "), ANSITEXTVIEW(R"(128.25)")); TestLoc(LOCTEXT ...

Building lighting fails on Linux without Internet connection

UE - Platform - Linux - Jul 6, 2015

Attempting to build lighting will stay at 0% and eventually fail if there is not internet connection for the computer. ...

Array inputs in Custom Events cause a compiler "note"

UE - Gameplay - Blueprint - Sep 1, 2015

Array inputs in Custom Events cause a compiler "note". On compile, "NOTE" is added to the node, and this appears in the Compiler Results: "Info No value will be returned by reference. Parameter 'Lis ...

Setting World to Meters in the World Settings to a large number will cause the console to show incorrectly in VR

UE - Platform - XR - Jan 4, 2016

If the User changes the "World to Meters" setting in the World Settings this will cause the console to appear offset when brought up in VR. Note: the number used was 3600 ...