Unreal Engine Issues
Unreal Engine Issues
Navigation system not handling component hierarchies properly
UE - AI - Aug 18, 2015Lots of details on the related UDN thread. In short, Navigation System is not handling properly deep component hierarchies. I've added a test map for this to AIProject, it's ComponentHierarchyOnNa ...
Seam visible when using a material with BumpOffset on a Nanite mesh
UE - Graphics Features - Nanite - Sep 18, 2025When a material that uses BumpOffset is fed into the Emissive Color of Surface Opaque Default Lit material and then applied to a nanite mesh, a visible seam can be seen along edges and the intersect ...
Level Blueprint zoom value is different for different templates.
Docs - Samples - Jan 30, 2017I'm not sure where to set this value, but it's extremely noticeable when the value defaults to -7 and you go and place a node and it looks like a colorful square smaller than your fingernail. I tri ...
Crash spawning actor with instance editable gameplay tag property that was changed inline
UE - Foundation - Core - UObject - May 6, 2020REGRESSION Does not occur in 4.24 Crash occurs if the user spawns an actor with an instanced editable Gameplay Tag node that was changed on the spawn node. Another user reported this happening wit ...
Modules with Emitter Life functioning incorrectly
UE - Graphics Features - Jan 7, 2016Setting the Emitter Time module with an emitter that is not set to loop will result in an incorrect render of the particles past the emitter duration. Emitter Duration set to 3 seconds:[Image Remov ...
Dbuffer Normals Incorrect In Forward Rendering
UE - Graphics Features - Apr 17, 2017After enabling forward shading materials with their decal response set to "normal" have incorrect shading. In the example project there are many pointlights and their specular highlight doesn't disp ...
Progress Percent is removed from UMG Progress Bar when Transform Shear value is changed
UE - Graphics Features - Nov 8, 2018Modifying the Shear values on a Progress Bar in a Widget Blueprint cause it to lose its Fill Color and set Progress. This is a regression from 4.20.3 (CL-4369336). Reproes with -vulkan on both Linux ...
Overridden Events that can be called in editor are indistinguishable from their parent's counterparts inside of child blueprints
UE - Gameplay - Blueprint Editor - Apr 18, 2019If an actor has a custom event that can be called in the editor and that event is then overridden by a child blueprint, both events will show up in the details panel. The issue is that these two eve ...
Unable to apply Materials to the chunks of a Destructible Mesh
UE - Simulation - Physics - Jul 31, 2018When applying a second material to a Destructible Mesh it does not texture the chunks of the fractured mesh. The chunks remain the same as base color of the Destructible Mesh. This is issue was re ...
When Mobile Deferred Shading, the DBuffer Decal is affected by metallic value
UE - Platform - Mobile - Jul 22, 2021Use Deferred Shading (r.Mobile.ShadingPath=1) Enable DBuffer Decal All Lights’s mobility is Static Decal Material settings : Material Domain - Deferred DecalBlend Mode - TranslucentDecal Blend Mo ...