Unreal Engine Issues
Unreal Engine Issues
Niagara - When Interpolated Spawning is disabled, the first frame of each particle unexpectedly does not take into account the Particle Update stage
UE - Niagara - Feb 28, 2025Foreword: Even if the behavior described here is by design, it is rarely (if ever) expected or desired. This was discussed and agreed to be treated as a bug. Explanation below. When interpolated sp ...
Shader Symbols not Generated for Windows Platform when r.Shaders.Symbols=1
UE - Rendering Architecture - Shaders - Feb 28, 2025Shader symbols are not generated for the Windows platform. Attempts were made to set the r.Shaders.Symbols=1 value in the projects DefaultEngine.ini, the engines ConsoleVariables.ini and the engine ...
Virtual Texture Data GetNumMips reports one fewer mip than expected
UE - Graphics Features - Feb 27, 2025FVirtualTextureBuiltData::GetNumMips() can return 1 fewer mip than it should due to a potential clamping issue at the end of FVirtualTextureBuilderDerivedInfo::InitializeFromBuildSettings() where it ...
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 ...
LastRenderTime does not update when Occlusion Culling is disabled
UE - Graphics Features - Feb 25, 2025When disabling Occlusion Culling, Components will not have their Last Render Time updated. ...
Missing libomp140 DLL causing crashes in Hair Card Generator plugin
EA Motive has run into a crash when using the hair card generator plugin. A missing DLL is preventing them from creating hair cards according to the initial investigation from their engineers. More ...
First Person Primitive
UE - Graphics Features - Feb 20, 2025First Person Scale and First Person Field of View on camera components do not apply to the depth prepass when rendering First Person View meshes, leading to a mismatch between the depth pre-pass and ...
Regression: Crash when saving the level blueprint of a world-partition map containing any node with an unconnected input pin of type "Gameplay Attribute Structure"
UE - Gameplay - Gameplay Ability System - Feb 19, 2025In UE 5.5, when the user attempts to save the level blueprint of a world-partition map, the Editor crashes if the BP contains any node with an input pin of type "Gameplay Attribute Structure", as lo ...
CameraRig_Rail actor does not show last index for preview mesh
UE - Anim - Sequencer - Feb 19, 2025Do not show the last index in the preview mesh display of the CameraRig_Rail actor. The reproduction test case generates a ring of rails, but only the last index is not displayed. Recommended Cod ...
[AI] Warning for invalid bounds on ANavLinkProxy
UE - AI - Navigation - Feb 18, 2025Using ANavLinkProxy's smart link but removing all of the simple links results in warnings in the logs for invalid bounds. The smart link is not set to be enabled until after the navigation element i ...