Auto Reimport crash with some file paths

UE - Editor - Content Pipeline - Import and Export - Dec 14, 2016

Auto Reimport source paths can cause a crash with the editor. I couldn't narrow down in my limited testing what would cause the crash vs what would not with these file paths. The one in my attached ...

[SolidWorks] Complex assemblies will not import correctly

UE - Editor - Content Pipeline - Datasmith - Importer - Aug 25, 2018

Using Solidworks 2017 Service pack 4.1 the sldasm files only partially import. Instances, folders, and suppressed parts also mess up the import. Suppressed parts show up from different configuration ...

Push based fast array with net.PushModelSkipUndirtiedFastArrays not replicating across multiple PIE sessions

UE - Networking - Sep 19, 2022

The conditions for this bug are fairly specific. The actor must be statically placed, with its only replicated property being the fast array, and net.PushModelSkipUndirtiedFastArrays must be enabled ...

Camera Shake can apply a new post process material every tick when post process material has "Is Blendable" disabled

UE - Anim - Sequencer - Mar 26, 2024

In the repro project the player camera has a post process material that slightly darkens the frame by subtracting 0.01 from the final color. When a camera animation based on a camera sequence is pla ...

FD3D12BindlessResourceManager::GrowCPUHeap will cause GPU heap activation whether it's needed or not

UE - Rendering - Architecture - RHI - Sep 11, 2025

The ctor of FD3D12BindlessResourceManager implies that GPU heap activation is intended to occur lazily with ERHIBindlessConfiguration::RayTracingShaders, however any call to FD3D12BindlessResourceMa ...

Crash When Adding a second animation timeline after adding keys to the first

UE - Anim - Sequencer - Nov 16, 2015

If the user adds a second time line to a widget blueprint after the first has had a key frame add then the editor will crash if the curve editor is selected. ...

Crash reparenting actor component to InstancedStaticMeshComponent

UE - Gameplay - Blueprint - Sep 14, 2016

Reparenting an actor component to an instanced static mesh component causes a crash. Found on //UE4/Dev-Blueprints CL-3122712 ...

Crash right-clicking in anim blueprint asset picker

OLD - Anim - Mar 10, 2017

Editor crashes when right-clicking in the blank area of the anim blueprint asset picker ...

Editor Crash on Mac after creating blueprint structure

UE - Gameplay - Blueprint - May 10, 2017

Creating a blueprint structure in the content browser causes the editor to lock up and become unresponsive. ...

CLONE - Editor Crash on Mac after creating blueprint structure

UE - Gameplay - Blueprint - May 19, 2017

Creating a blueprint structure in the content browser causes the editor to lock up and become unresponsive. ...