Unreal Engine Issues
Unreal Engine Issues
Dynamic Obstacle Blueprint components do not correctly affect navmesh in standalone mode
UE - AI - Jul 21, 2015Static mesh components of blueprints with "Is Dynamic Obstacle" set to true do not correctly affect navigation when standalone mode is initially run. Once another object is moved and the navmesh is ...
Foliage 'BlockAll' instanced static meshes do not affect NavMesh
UE - AI - Navigation - Feb 27, 2024When placing static mesh foliage and setting the foliage mesh's Collision Preset to Block All, the placed meshes do not consistently block parts of the nav mesh. Expected: Placed meshes (for examp ...
UV Import layout error increases with movement of UVs away from 0-1 Space
Tools - May 27, 2015When a user sets up an unwrap using a space outside the original 0 to 1 space the unwrap will increasingly show errors of positioning. For Example, in the following images the lower left vertex of ...
Destroying a welded actor is causing an Array index out of bounds crash on 5.6
UE - Simulation - Physics - Jul 30, 2025Destroying a welded actor is causing an Array index out of bounds crash on 5.6. The licensee has provided a repro project that reliably causes a crash whenever the spawned actor is destroyed. There ...
Add Point node used with an InputKey of 0 or 1 will crash the editor on bp compile
Tools - Nov 29, 2016Add Point node used with an InputKey of 0 or 1 will crash the editor on bp compile User Description: Unreal version 4.14 crashes every time that you use spline component and try to add the point 0 ...
Cannot Import Sound File with Duration Less Than 1 Second
UE - Audio - May 29, 2015Unable to import a sound file shorter than 1 second in length. The two sound files attached are the same sound, but one has been extended to at least 1 second long and successfully imports. ...
Possible: JPG encoding for Highscreenshot broken in 5.1 Linux build
UE - Platform - Linux - Feb 10, 2023UDN report of JPG encoding not working: [Link Removed] Can we ask QA to try to repro? ...
"Play Rate" below 1 and "Force Fixed Frame Interval Playback" causes choppy renders
UE - Anim - Sequencer - Jul 12, 2016"Play Rate" below 1 and "Force Fixed Frame Interval Playback" causes choppy renders. This was explained by Max on Answerhub to the user, but this seemed like something that should be bugged and loo ...
Data Asset Deserialization crash after upgrading 4.19.2 to 421.1
UE - Foundation - Core - Feb 7, 2019The User has provided an extensive log of their code base setup, and the process leading up to when the Assert occurs. "Our game mode & player state FSM are setup in a data driven manor using UDa ...
Crash when upgrading Nvidia GFX driver from Version 457.85 with open Project
UE - Graphics Features - Nov 18, 2022Repro Rate: 5/5 Summary: When opening a Project in UE version 5.1.0 with Nvidia GFX driver version ###, the user is notified that there are known issues with this driver through a pop-up:WARNING: K ...