Compiling blueprint component can lose data on instances in level

UE - Gameplay - Blueprint - Apr 29, 2022

Compiling a blueprint component can cause data loss on instances in the level when the component instance overrides its owning Blueprint's property value overrides back to the component archetype's ...

Reimporting FBX imported with Import Into Level does not maintain the changed material.

UE - Editor - Content Pipeline - Import and Export - Jul 13, 2022

If you import by drag & drop without Import Into Level, the material will be maintained even if you change it. This is because FFbxImporter::ReimportStaticMesh() sets ImportOptions->bImportMaterial ...

Montages played by GAS do not respect Blend Out Time

UE - Gameplay - Gameplay Ability System - Dec 15, 2022

Replicated Montages played via GAS are not blended out using the BlendOut time set in the Montage, and are instead blended out using the BlendIn time ...

[SKP] [Import] Sketchup model imports as an empty container when imported via Interchange.

TM - Interoperability - Jan 30, 2024

So far I could reproduce this with 3 different files. I only attached this one, since this is the smallest ...

USplineMeshComponent::CalcBounds may return invalid value

USplineMeshComponent::CalcBounds function should be returning an FBoxSphereBounds type, but in the implementation it instead outputs an FBox. This may result in the returning of invalid results, esp ...

Groom assets can no longer be created without curves data

UE - Graphics Features - Nov 18, 2025

It used to be possible to create an empty Groom assets without an Alembic file. However, this is no longer possible because curve data is required This workflow is useful to create grooms that onl ...

Crash when clicking on a "Two Bone IK" node

UE - Gameplay - Blueprint - Mar 5, 2015

Crash when clicking on a "Two Bone IK" node in an Animation Blueprint Crash Reporter currently down, see callstack section. Log and dmp are attached ...

Uasset causes editor to crash when opened/right clicked

UE - Gameplay - Blueprint - Oct 21, 2014

Character asset will crash the editor immediately when opened or right clicked. Crash Report: 431837 ...

HydroErosion on landscape crashes on Linux

UE - Platform - Linux - Mar 13, 2015

While on a Linux OS, the editor immediately crashes if the Hydro Erosion tool is used on a landscape. ...