Instanced subobject property values nested inside struct members are copied from default data at object initialization time, possibly leading to an EDL error at runtime.

UE - CoreTech - UObject - Aug 18, 2021

When initializing struct members from default data at UObject initialization time, we are currently copying struct properties that contain instanced subobjects from the default data. This can potent ...

Double clicking (quickly) on a combo box (String) will cancel the next click event for the ComboBox (String)

UE - Editor - UI Systems - Jan 15, 2015

A user has found that if they quickly double click the combobox (string) the next time they click it, it will not open as it should. They will then have to click an extra time to open the combobox ( ...

UMovieSceneUserImportFBXSettings is not a blueprint type.

UE - Anim - Sequencer - Jan 20, 2021

This class is needed for FBX importing through blueprints. It needs the BlueprintType class specifier. ...

MoviePipeline: OnExecutorErroredImpl has inverted bError bool usage

UE - Anim - Sequencer - MRQ - Aug 8, 2022

OnExecutorFinishedDelegateNative and OnExecutorFinishedDelegate broadcasting an bFatal into a bSuccess parameter which is inverted. Canceling a render should be considered an error, not a success. ...

Users can't change flags on asset entries in PSD when the asset was added via a Branch In notify

UE - Anim - Gameplay - Mar 19, 2025

Assets added to a PSD via a Branch In notify can't have their flags changed within the database. When the flags (like mirror, disable, etc) are changed, they revert back to the original value when ...

Spline blueprints cause negative values in Scene Outliner until build pressed again

Tools - Nov 6, 2014

Moving a spline mesh in the viewport causes negative values to be applied in the scene outliner actor count until the level is built again. ...

Rich Text Block automatic line wrapping doesn't work properly with image decorators

UE - Editor - UI Systems - Slate - Jul 15, 2020

Rich text blocks don't seem to factor in the size of their embedded images properly when choosing where to wrap with autowrap enabled. ...

VR Preview crash when shadow quality is set to low

UE - Platform - XR - Dec 5, 2024

[/Script/Engine.RendererSettings] r.Tonemapper.Sharpen=2 r.TemporalAA.Upsampling=False r.DefaultFeature.AutoExposure.ExtendDefaultLuminanceRange=True r.LightPropagationVolume=0 r.ReflectionCaptureRe ...

GAS: Initial OnRep_SpawnedAttributes from DefaultStartingData clears attribute values for already replicated ActiveGameplayEffects

UE - Gameplay - Gameplay Ability System - Oct 23, 2024

Context The property 'DefaultStartingData' in AbilitySystemComponent can be configured from blueprint to spawn default attribute sets. This happens OnRegister. For runtime spawned actors like pawns ...

Ghosting effect of fast moving objects in Lumen

UE - Graphics Features - Lumen - Oct 15, 2024