Unreal Engine Issues
Unreal Engine Issues
Assertion occurs when undoing a Child State's unparenting from another Child State in AI State Trees, leading to a crash.
UE - AI - StateTree - Apr 15, 2022Assertion occurs when undoing a Child State's unparenting from another Child State. Repro Rate: 5/5Assertion failed: false [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Public\Widgets\Views ...
Editor crash when Use Dynamic Material Instance is set to "True" on landscape
UE - LD & Modeling - Terrain - Landscape - Mar 23, 2018Setting "Use Dynamic Material Instance" to true in the landscape details will cause the editor to crash. Reproduced in 4.19.0 CL 3944462 and 4.20 Main. This feature is not available in 4.18.3. ...
Doing a Rebuild in Visual Studio fails to compile
UE - Foundation - Cpp Tools - UnrealBuildTool - Apr 19, 2016Attempting to use the Rebuild option in Visual Studio will fail to build the project. It instead produces a message that "Epic was unexpected". ...
OnComponentWake Event does not trigger when the physical body is awoken by a Force
UE - Simulation - Physics - Feb 27, 2025OnComponentWake Event does not trigger when the physical body is awoken by a Force. The steps described on Steps To Reproduce is enough to replicate this behavior. The OnComponentWake event is only ...
Cannot continuously change Bone Name in SkeletalMesh Sampling Settings
UE - Anim - Jun 14, 2024An access violation occurs in FNiagaraSkeletalMeshRegionBoneFilterDetails::HandleBoneNameComboBoxSelectionChanged() due to StringItem is nullptr. SkeletalMeshRegionCustomization.cpp void FNiagaraS ...
Windowed Fullscreen causes Lighting Variations in Rendered Envrionment
UE - Graphics Features - Jan 18, 2016When a scene is light with a single Stationary Directional Light and a Single Stationary Skylight and packaged to use Windowed Fullscreen, there is a difference in how the scene is rendered compared ...
Root Motion from Everything doesn't accept Root Motion from Montages
OLD - Anim - Feb 18, 2016Root Motion from Everything doesn't accept Root Motion from Montages in 4.11. This works in 4.10. Can regress down the issue if needed. ...
Light Propagation Volume Occlusion Intensity not working as intended
UE - Graphics Features - Oct 26, 2017Light Propagation Volume Occlusion does not affect scene as it should. The workaround in 4.17.2 is to disable DBuffer decals which will enable the Light Propagation Volume Occlusion. Occurs in 4.1 ...
Crash on opening Control Rig asset that was created in UE5-EA
UE - Anim - Rigging - Control Rig - Nov 8, 2021This issue was found from an external user on Twitter using UE5-Early Access - [Link Removed] The crash happens on asset load. User says that they were following Gabriele's video - [Link Removed] ...
Game instance spawning object crashes .exe in packaged project
UE - Gameplay - Blueprint - Mar 19, 2015If an actor is spawned using game instance blueprint, a packaged .exe will crash upon loading. Frequency: 2/2 Crash Reporter: [Link Removed] ...