Unreal Engine Issues
Unreal Engine Issues
Niagara Particles in Mesh Shape Don't Render in Scene or Editor Preview
UE - Niagara - Dec 19, 2019Niagara particles aren't rendered in the Niagara Editor Preview or the scene when an emitter is in it. Found in 4.24.1 CL#10756747 Reproduced in 4.25 Main CL#10808197 ...
OSVR fatal error while playing in -game
UE - Platform - XR - May 6, 2016Found on: //UE4/Dev-VR CL-2967563 About 1/6th of the time I'd start a -game instance and go in to stereo on the OSVR, the game would seemingly just close itself. I say close as opposed to crash, si ...
[AI] Nav Modifier Volume inside of a Level Instance does not update navmesh when moved
UE - AI - Navigation - Oct 3, 2023The issue is seen when using a normal navmesh inside of a World Partitioned level. Adding a Nav Modifier Volume to a Level Instance, and placing the Level Instance in the world will affect the navme ...
LIVE: Attach Actor to Component crashes the editor when used after Set Simulate Physics
UE - Simulation - Physics - Oct 31, 2014The user has attached a small project at the link to demonstrate the issue. Occurs in 4.5.1 and well as Main (//depot/UE4/Promotable-CL-2239587). Crash Reporter: [Link Removed] ...
[CrashReport] UnrealEditor-Engine!SkeletalDebugRendering::DrawBonesFromPoseWatch(FPrimitiveDrawInterface *,FAnimNodePoseWatch const &,bool) [SkeletalDebugRendering.cpp:213]
UE - Anim - Runtime - Jan 3, 2023Generated from CrashReporter 1 user reported: "Crash when using "Toggle watch pose" in any node of the animation blueprint. The crash happens when you save the ABP after enabling toggle watch pose ...
BSP brushes get Clipped or Disappear relative to the Surface Normals of a nearby Brush when Deleting/Flipping Faces
UE - LD & Modeling - Modeling Tools - BSP - May 1, 2017While testing this issue it was interesting to discover how the surrounding BSP's were affected. They seemed to clip/disappear according to the surface normals of the deleted brushes. There is a si ...
Certain options don't display in Context Sensitive search for Widget Blueprint until opening a regular Blueprint
UE - Gameplay - Blueprint Editor - Jan 3, 2023Context Sensitive searches in Widget Blueprints is not working as expected in 5.1. I was able to reproduce this 4/4 times in 5.1, and confirmed that this issue is a regression as the search works as ...
Character Using Move to Location or Actor Stutters
UE - AI - Jun 9, 2016Characters using Move to Location or Actor will briefly pause with each few steps during their movement. This did not occur in 4.11.2 binary, this is a regression. Found in 4.12.1 binary. Reproduc ...
The MainMenu widget isn't loaded when the player returns to the MainMenu map from the InGame menu in Multiplayer Shootout
UE - Networking - Jun 16, 2015The MainMenu widget isn't loaded when the player returns to the MainMenu map from the InGame menu in Multiplayer Shootout. This happens in PIE and in a packaged project. Reproduced in 4.8.0 and Mai ...
Farfield shadow in lumen scene
UE - Graphics Features - Jul 21, 2025Shadows in the Lumen Scene from Lumen's Direct Lighting do not match the world when in the Lumen Far Field. This leads to shadows where there should not be any, and missing shadows where there shou ...