Unreal Engine Issues
Unreal Engine Issues
Importing FBX that contains a socket from Blender to Unreal, the socket gets rotated by 90° and is scaled by 100
UE - Editor - Content Pipeline - FBX - Sep 9, 2025Context: Sockets are attach points that can be placed on a Static Mesh to attach an object to the static mesh. Problem: Importing an FBX that contains a socket from Blender to Unreal, the socket ge ...
Using VSM and Distance Field Shadows on the same scene results in missing shadows
UE - Rendering - Graphics Features - Shadows - Feb 9, 2026Nanite geometry does not cast Distance Field Shadows outside of the clipmap range for Virtual Shadow Maps. Non-Nanite geometry does cast these shadows. ...
StaticMeshActors spawned at runtime are not visible until a property has been changed and also have no collision unless set to moveable
UE - Gameplay - Dec 22, 2015Spawning a StaticMeshActor at runtime results in the StaticMeshActor not being visible until a property has been changed, such as the material for the Static Mesh. The spawned actor will also have n ...
MakeMaterialAttributes and LandscapeLayerBlend produce unexcepted results for WorldPositionOffset
UE - Rendering - Architecture - Materials - Nov 8, 2021For comparison, this issue doesn't seem to occur when recreating the setup with Set Material Attributes/GetMaterialAttributes. It seems isolated to the Make/Break nodes. ...
Actor attached to child actor fails to serialize as part of map
UE - Framework - Components - Nov 3, 2023Attaching other actors to a child actor (actor spawned by ChildActorComponent) fails to serialize correctly as part of the map. The attached actor loads as detached and resets its position back to w ...
Lumen indirect lighting artifacts when far from world origin
UE - Graphics Features - Lumen - Feb 6, 2024Lumen seems to not be using Large World Coordinates somewhere. The Lumen Scene develops artifacts at large distances (5000 KM) from the world origin. ...
EObjectTypeQuery array nodes break when changing Object Channels in Project Settings
UE - Gameplay - Blueprint - Aug 18, 2017When an object channel is deleted in Project Settings, any EObjectTypeQuery array becomes broken due to the array size shifting. Additionally: Enums can change when adding new Object Channels after ...
MoverExamples: characters have 1-frame unnecessary extra input latency
UE - Runtime - Character - Mar 6, 2024Due to the way input is handled on the MoverExamplesCharacter, including AnimatedMannyPawn, we have a delay in the time between when an input event occurs and when it is ingested by the movement sim ...
Editor vs Runtime: Inconsistent data layer behavior when attaching actors
UE - World Creation - Worldbuilding Tools - World Partition - Jun 5, 2025In editor, data layer system respects the data layer settings for each actor, but at runtime, the condition check is made collectively for each actor cluster, resulting in differences in behavior. ...
Data is not filled in for a Blueprint struct array contained within another Blueprint struct
UE - Gameplay - Blueprint - Mar 6, 2017If a Blueprint struct contains a variable that is an array of another Blueprint struct, data in a datatable based on the first struct will not be correctly filled in for the struct array. If the str ...