Open Formats: Interchange Import Runtime - Interchange ImportAssetAsync runtime GLB import — materials, textures, tangents, and shaders non-functional in packaged builds (6 issues, UE 5.7.4)

UE - Editor - Open File Formats - Apr 30, 2026

Description* We are using Interchange's `UInterchangeManager::ImportAssetAsync()` to import GLB files at runtime in a packaged (Shipping) application. The orchestration layer (`ImportInternal` in `In ...

List view reorders itself as it is scrolled through.

UE - Editor - UI Systems - Feb 26, 2019

The widgets in a list view widget will appear to reorder themselves as they are scrolled through. ...

Physics Constraint Component loss of accuracy

UE - Runtime - Simulation - Mar 6, 2025

Physics Constraint Component has lost accuracy between Unreal versions 5.2 and 5.4 (and up). When measuring the exact distance between rigid bodies constrained by a Physics Constraint Component, the ...

UMG textfield crash with using Metal

UE - Graphics Features - Dec 12, 2016

UMG textfield crash with using Metal after switching screens and spamming a UMG text field. User provided an example video for reference. Link: [Link Removed] ...

Components spawned at runtime do not take Radial Damage if simulating physics

UE - Gameplay - Mar 16, 2015

Components spawned at runtime do not take Radial Damage if simulating physics. ...

UWorldPartitionSubsystem::IsStreamingCompleted returning the wrong query result when all cells and actors in location are in DataLayers

UE - Engine Scaling - Streaming - World Partition - Jul 24, 2025

Context: Data Layers is a system within World Partition used to organize Actors both in the Editor and at runtime. It allows for the user to dynamically load and unload layers in the Editor to help ...

CharacterMovement doesn't clear velocity

UE - Runtime - Simulation - Oct 11, 2024

Velocities are not being cleared when physics simulation set to false.  ...

Dev Folder is referencing/being referenced by UE4_Mannequin

Docs - Samples - May 6, 2015

Basically UE4_Mannequin is causing a dev folder to show up if you add the template as a content pack. It's a few materials that are being kept there. ...

Cracks in polygons in BSP Optimize

UE - Graphics Tools - Modeling Tools - BSP - Jul 1, 2021

This problem also occurs when the Create Convex Polygons checkbox is checked in the Pen tool. ...

Quality settings should not affect landscape resolution

UE - LD & Modeling - Terrain - Landscape - Mar 10, 2015

Changing the quality settings (or having them change on you automatically in the editor) drops mips on landscape heightmap textures, which isn't desirable as it makes it look like there are collisio ...