Crash when entering Brush Editing mode with a Sequence spawnable Post process volume

UE - Graphics Tools - Modeling Tools - BSP - Mar 18, 2024

Crash in ProceduralMeshComponent when building lighting

UE - Graphics Features - May 15, 2015

Crash on build in editor with UProceduralMeshComponent 4.8 p2 ...

Crash when sculpting on duplicated landscape with edit layers enabled

UE - Graphics Tools - Terrain - Landscape - Jun 8, 2021

Crash happens when trying to sculpt on a duplicated landscape that has edit layers enabled. This crash does not occur for landscapes that are duplicated with edit layers disabled. ...

Geometry Collections built with "Use Root Proxies" rendering/transform positions ignore the original root node rotation and can lead to unexpected behaviors

UE - Runtime - Deformable - Nov 17, 2025

Geometry Collections (GC) built with "Use Root Proxies" rendering/transform positions ignore the original root node rotation and can lead to unexpected behaviors. If the root node of the GC was rot ...

User-instanced subobjects owned by a streaming sublevel's Blueprint CDO cannot be garbage collected with the owning world after the sublevel has been reloaded in the editor.

UE - Gameplay - Blueprint - Feb 5, 2020

Strong object reference properties of an 'EditInline'-decorated UCLASS type embedded within a native C++ struct definition can be instanced at edit time by the user as part of a variable's default v ...

Editor added components can fail to attach to a native root component

UE - Framework - Blueprint - Feb 8, 2021

An actor instance's editor added components can fail to attach to the root component of the actor when changing the native root component's mobility from static to movable. The failure happens durin ...

After adding MovieSceneObjectPropertyTrack from BP or Python, clicking the pull down of the added track occurs crash

UE - Anim - Sequencer - Sep 6, 2019

When MovieSceneObjectPropertyTrack is added from BP or Python, PropertyClass of UMovieSceneObjectPropertyTrack becomes null, so it crashes with the following processing of SPropertyMenuAssetPicker : ...

Crash Applying Multiple Anim Modifiers

UE - Runtime - Animation - Sep 5, 2021

Fatal error: [Link Removed] [Line: 2516] Fatal error: [Link Removed] [Line: 2516]Objects have the same fully qualified name but different paths. New Object: MotionExtractorModifier /Game/Characters/ ...

Crash when double-clicking landscape editor splines point tangent

UE - Graphics Tools - Terrain - Landscape - Apr 11, 2023

When double click splines point tangent, the editor will crash.  This issue related to [Link Removed], it didn't care about double-click case. Workaround: void FEditorViewportClient::ProcessDoubl ...

Editor ensure in USceneComponent::OnComponentDestroyed during Blueprint compilation GC

UE - Framework - Components - Jan 15, 2026

An editor-only ensure can trigger during BP compilation when garbage collection cleans up transient components created as part of component replacement. During recompilation, old component instances ...