Blueprint actors can not be casted until they have been opened after migration or being upgraded to a more recent engine version

UE - Gameplay - Blueprint - Jan 5, 2023

This is not a regression tested in //UE5/Release-5.0 CL20979098 After migrating an asset from an older engine version or upgrading a project to newer version Blueprints carried over can not be cast ...

Per instance custom data and Material Layers issue

UE - Rendering Architecture - Dec 12, 2023

Niagara mesh particles invalidate lighting when "Cast Shadow" is enabled with Hardware Ray Tracing enabled

UE - Graphics Features - Lumen - Jun 24, 2025

Lumen HWRT, combined with Niagara Mesh Renderer, can cause the Lumen Scene to be reset, resulting in a sudden change to indirect lighting. ...

Inconsistent Details Panel Focus Behavior On Enter Pressed for Blueprint-Added Components

UE - Editor - Workflow Systems - Jul 2, 2025

When editing a component property in the level viewport, if the component was added via the Blueprint Editor, pressing Enter after changing a value causes the details panel to lose focus. This inter ...

Incorrect transforms when breaking a packed level actor

UE - World Creation - Worldbuilding Tools - Level Instances - Aug 14, 2023

See "Steps to Reproduce" ...

VectorParameter UI display in the Layer Parameters Panel of MIC editor issue

UE - Rendering Architecture - Materials - Aug 22, 2023

Network Prediction Insights tool checks/crashes with trace data from a multiplayer PIE session

UE - Gameplay - Network Prediction - Mar 27, 2024

Loading a trace in Insights that has Network Prediction channel data from a multi-client PIE session will hit a check and crash the Insights tool. ...

Nanite static mesh components are not individually highlighted when selected

UE - Rendering Architecture - Apr 30, 2024

Non-nanite static mesh components still show an individual highlight outline which individually selected even with other non-nanite static mesh components in the same actor. This is different when t ...

Depth of field and Refraction issue

UE - Rendering Architecture - May 15, 2024

Refraction does not adjust the scene depth texture, leading to a mismatch between Scene Color samples and Scene Depth samples. ...