Input Mapping Context entries can get into a corrupted state when swapped with another entry that has a Combo Trigger.

UE - Gameplay - Input - Aug 23, 2024

This behaviour was working correctly in version 5.3. This issue happens inside an InputMappingContext DataAsset from the EnhancedInput system. We need at least two mappings entries. One of the entri ...

Edit Condition does not work properly when the structure is used as a key for Map

UE - Framework - Blueprint - Jun 19, 2025

When the structure is used as a key for Map in Blueprint, Edit Conditions does not work properly. It will be updated when you move the focus to a different location(ex. a component) and click the v ...

Nanite Skeletal Meshes Invalidate VSM

UE - Graphics Features - Nanite - Sep 17, 2025

Nanite Skeletal Meshes will always invalidate VSMs, even with their Shadow Cache Invalidation Behavior set to Rigid. This does not match the behavior of non-Nanite Skeletal Meshes. ...

Static meshes viewed in the static mesh editor in orthographic side view are becoming white after a couple of seconds when quality preset is maximum.

UE - Rendering Architecture - Jun 18, 2025

Context: Orthographic views are used to have a 2D view of a 3D object providing precise control over object placement and alignment. This can be used for projects like isometric games and architectu ...

Iris - Server fails to send client initialization RPCs after seamless travel if the client finishes travelling first

UE - Networking - Iris - Nov 18, 2025

During seamless travel, when a client loads into the destination level it will call APlayerController::ServerNotifyLoadedWorld, including when it finishes the travel before the server. When the serv ...

Global Distance Field Not Working With World->SetNewWorldOrigin

UE - Graphics Features - Lumen - Feb 20, 2023

Niagara user parameters out of sync between the Sequencer and the Details panel

UE - Niagara - Cinematics - Feb 13, 2024

User Parameters on Niagara actors do not sync in the details panel when animated with Sequencer. Scrubbing in sequencer does not update the details panel. ...

A crash occurs inside the Unreal Editor when we change the Spline Point type of a spline point, and we subsequently select another spline point

UE - Editor - Workflow Systems - Jul 22, 2024

In versión 5.4, a crash has been found when using splines inside the LevelViewport. This crash occurs when we change the Spline Point Type of a spline point, and subsequently we select another splin ...

InlineEditConditionToggle Prevents Config Bools from Being Written to Settings .ini File

UE - Editor - Workflow Systems - Apr 1, 2025

In a Developer Settings Class, Boolean properties marked with InlineEditConditionToggle do not get written to the associated settings .ini file, preventing configuration settings from being saved pr ...

TSR does not converge while using the color grading widget

UE - Editor - Applied Usability - Jun 17, 2025

TSR (and TAA) does not converge when interacting with the color grading widget, but while keeping the mouse still. This makes it real-time previews more difficult. The expected behavior would be tha ...