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 ...

Crash when exiting editor before EditorUtilityTask completes

UE - Editor - UI Systems - May 29, 2024

If exiting the editor before the EditorUtilityTask completes, it crashes. It will not crash if canceling the UtilityTask and then exit the editor. The following implementation does not allow destruc ...

Error in output log when Revision Control submits an asset for deletion with Virtual Assets enabled

UE - CoreTech - VirtualAssets - Feb 17, 2025

With Virtual Assets setup in a project, when an asset is deleted and the changelist then submitted via revision control, the virtualization system will attempt to read the deleted asset. The submit ...

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. ...

Navmesh breaks after hitting build or build>paths after upgrading to 4.7.2

UE - AI - Mar 10, 2015

Navmesh breaks and repeats pattern from individual landscape section when a project is updated to 4.7.2 and then build or build paths is pressed. ...

MoveToActor doesn't update AI's path on goal actor's move

UE - AI - Mar 16, 2015

A number of issues with MoveToActor have been observed in 4.7.2, including: 1. Not updating path on goal actor's move 2. hitting obstacles after path updating ...

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. ...

Template animations pop upon looping

Docs - Samples - Feb 10, 2015

The animations in the following code and blueprint templates pop upon looping SideScroller -SideScrollerRun -SideScrollerWalk SideScroller2D -RunningAnimation ThirdPerson -ThirdPersonRun -ThirdPers ...