Copy Actors out of play mode ( 5.3.1 )

UE - Editor - Dec 22, 2023

From UDN case #00645621: Is it possible that this function has been deactivated? In 5.03 I can copy objects from the game mode. ...

Children of Retainer Box cannot be interacted with when visibility is set to "Self Hit Test Invisible"

UE - Editor - UI Systems - Jun 19, 2017

When there is a Retainer box with the visibility set to "Self Hit Test Invisible" and has children, the children cannot be interacted with. Children such as a button cannot be clicked. This issue c ...

When always loading last project, project logs are saved to the engine folder

UE - Editor - Aug 6, 2020

Checked on the Binary version //UE4/Release-4.25 stream CL 13942748 Version 4.25.3, logs are also saved into Engine folder: \AppData\Local\UnrealEngine\4.25\Saved\Logs instead of a Project folderIf a ...

Editor Periodically Has Performance Drops In Basic Scenes

Tools - Dec 27, 2019

The Editor experiences performance drops even in the default basic level when left alone running. I experienced them every ~3 seconds. My graph didn't show the drops very clearly so the fps counter ...

Particles Do Not Obey Lighting Channels

UE - Niagara - Apr 17, 2018

Particle systems ignore lighting channels - no matter what channel a light is on (even if no channels are selected), it will affect lit particles. Changing lighting channels on the particle itself h ...

Incorrect Manual Focus Distance from eye dropper

UE - Anim - Sequencer - Oct 17, 2019

The Debug Focus Plane in the CineCameraActor does not appropriately respond to mouse input and position when the Manual Focus Distance is set using the eye-dropper. Tested in 4.21.2 (CL - 4753647), ...

Sublevels Move To New Subfolders Automatically When New Ones Are Made

Tools - Mar 11, 2020

When adding a new subfolder in the Levels window all the sublevels in that parent folder move to the new sublevel. Currently you have to create all the sub folders then move the sublevels to keep th ...

Editor crash when a spline component is added to a blueprint and compiled

Tools - Sep 7, 2016

Most recent user affected CL: 3106830 (4.13.0) Error message: Access violation - code c0000005 (first/second chance not available) Source Context: SelectedKeys = SplineVisualizer->GetSelectedKey ...

Geometry in sublevel created with "Load Level Instance" ignores level transform

UE - LD & Modeling - Modeling Tools - BSP - Sep 26, 2017

Geometry in sublevel created with "Load Level Instance" ignores level transform. Other objects, such as Static meshes are affected by the transform. This issue is not a regression. Versions tested: ...

Blurry RVTs after camera jump

UE - Graphics Features - Aug 7, 2025

When using Runtime Virtual Textures (RVT) on landscape in UE 5.5+, nearby tiles may remain blurry (low-resolution mips) after launching PIE or making large camera jumps (e.g. via bookmarks or viewpo ...