Unreal Engine Issues
Unreal Engine Issues
Broken hair material with light function
UE - Graphics Features - Dec 19, 2024Hair Materials do not react to Light Functions in the same way as other Materials. There is a visual difference between a Directional Light at 1 lux with no Light Function and a Directional Light at ...
Crash when creating StaticMesh repeatedly
Tools - Nov 21, 2014UE4Editor crashes when creating static meshes. Event at startup time while it tries to create default object it crash sometimes. ...
SetGamePaused on EventDestroyed crashes the editor on compile
UE - Gameplay - Blueprint - Apr 1, 2015SetGamePaused on EventDestroyed crashes the editor on compile. Reproduced in 4.7.3 binary and Main (//depot/UE4/Promotable-CL-2496752) Crash Report: [Link Removed] Call Stack: UE4Editor_Engine! U ...
Regression: Shader compile failure with SceneDepth in mobile and PC, ES3_1
UE - Platform - Mobile - Nov 30, 2018SceneTexture:SceneDepth node is not properly compiled in ES3_1. Regression? yes, It is working in 4.20.3 launcher version. This log come up with compile failure LogMaterial: Display: Missing cache ...
Crash using Import Commandlet on FBX that gets "Bones are too small" error when imported manually
UE - Editor - Content Pipeline - Import and Export - Feb 23, 2017Crash using Import Commandlet on FBX that gets "Bones are too small" error when imported manually Error from manual import: Warning The bone size is too small to create Physics Asset 'ButterflyVa ...
ChaosCacheManager is not reproducing Trailing Events
UE - Runtime - Simulation - Mar 28, 2025ChaosCacheManager (CCM) is not reproducing Trailing Events. Particles set to track Trailing Events correctly follow the position of the trailing event when the Geometry Collection (GC) is physically ...
Widget Blueprint breakpoints hit during a Tick event do not engage the debugger.
UE - AI Workflows - UI Systems - Jun 13, 2024The user comment on the Salesforce issue " This is a regression from the behaviour in 5.3.X, and I've reproduced it in 5.4.0, 5.4.1, and 5.4.2. The specific issue/change that caused this regression ...
Small objects have erratic behavior when simulating physics
OLD - Anim - Aug 22, 2017Small objects have erratic behavior when simulating physics. If drop at an angle, some will start spinning indefinitely on contact with the ground while others will spin in place when hit. This is ...
Engine Crashes On Scene Close When An Actor Is Spawned With Templated FActorSpawnParameters
UE - Simulation - Physics - Mar 5, 2020When an actor is spawned with Spawn Parameters that are templated the engine crashes when closing a scene. This wasn't happening when there wasn't a physics constraint on the spawned blueprint. Thi ...
Set Haptics By Value node does not consistently trigger successive haptic feedback effects on Oculus Touch
UE - Platform - XR - Jul 16, 2016Relatively consistently (3/5), after one haptic effect plays, pressing the button to call another won't trigger another haptic effect. Seems to be tied to Set Haptics by Value, Play Haptic Effect d ...