Unreal Engine Issues
Unreal Engine Issues
Crash in FShadowSceneRenderer::AddDirectionalLightShadow
UE - Rendering - Features - Shadows - Jun 2, 2025This is a race condition between the FShadowScene update & rendering, where sometimes the renderer tries to access a data array before it has been populated leading to the crash. It happens fairly r ...
CapsuleComponent Shape sometimes reverts to previous value after entering a new value
UE - Foundation - Core - Nov 28, 2014If you manually type in the value for Capsule Half Height, it will sometimes revert back to it's previous value upon hitting Enter. The CapsuleComponent's shape in the Blueprint's Viewport adjust to ...
Spin Box delta does not appear to affect how the spin box increments through its values when clicking and dragging with the mouse
UE - Editor - UI Systems - May 12, 2017Spin Box delta does not appear to affect how the spin box increments through its values when clicking and dragging with the mouse. The spin box appears to increment/decrement by more or less dependi ...
Crash when attempting to save Soft Object Reference
UE - Gameplay - Blueprint - Aug 13, 2018Engine will crash when attempting to save soft object reference. "FArchive does not support FSoftObjectPtr serialization. Use FArchiveUObject instead." Also reproduced in Main CL #4247864 ...
Crash when enabling Nanite on a Mesh using an OptimusDeformer
UE - Runtime - Deformable - Jan 29, 2026When a skeletal mesh has a deformer present and then nanite support is enabled and applied. (the deformer in question was hsasset://DeformerGraph/Deformers/DG_LinearBlendSkin_Morph_Cloth_RecomputeNo ...
r.SupportPointLightWholeSceneShadows Set to False Causes Crash When Trying to Place a PointLight
UE - Graphics Features - Jul 25, 2018If you disable Support PointLightWholeSceneShadows and try to place a point light in a level the editor will crash. Current work around is put shadows to low from engine scalability settings. Wor ...
[CrashReport]libUnrealEditor-RenderCore!FRDGEventScopeOpArray::Execute(FRDGBreadcrumbState&) [RenderGraphEvent.cpp:149]
UE - Rendering - RHI - Jun 6, 2022Generated from CrashReporter Error Message:Assertion failed: !EnumHasAnyFlags(StencilAccess, AnyCopy) [File:./Runtime/VulkanRHI/Private/VulkanBarriers.cpp] [Line: 439] Only the Stencil being transi ...
Motion Blur Appears Exaggerated with Planar Reflection Actor in Level and Accurate Velocities Setting Enabled
UE - Graphics Features - Jun 8, 2016Motion blur seems exaggerated with a Planar Reflection Actor placed in the Level and the Support Accurate Velocities from Vertex Deformation setting enabled. I am assuming this is happening becaus ...
Artifacts when using virtual textures for multiple attributes in material layers
UE - Rendering - Architecture - Materials - Sep 29, 2022When using the Material Layer system and virtual textures, the number of physical texture samples in the shader increases with the number of material attributes that a virtual texture writes to. The ...
Ray Traced Distance Field on OpenGL not working
UE - Graphics Features - Dec 1, 2015Are Ray Ttraced Distance Field Soft Shadows supported on OpenGL ES3.1 + Android Extension Pack platforms like the Shield Tablet or Shield Console? Since the ES3.1+AEP platform supports deferred ren ...