Unreal Engine Issues
Unreal Engine Issues
Water Exclusion Volume does not fully effect a Water Body
UE - Graphics Tools - Terrain - Water - Nov 21, 2022Regression: Tested in UE5/Release-5.0, issue also occurs User has stated that they were using the Exclusion Volume to create a hole in the water for a cave or tunnel so that the water is not visibl ...
Game View renders Lights with Actor Hidden In Game enabled
UE - Rendering - Features - Dec 6, 2022This is not a regression. Tested in both 4.27.2 and //UE5/Release-5.0 CL20979098 Game View renders Lights with Actor Hidden In Game enabled. Documentation states: "...the Viewport to display the sc ...
In editor, custom primitive data dont work on instance static meshes in bp instance
UE - Framework - Components - Jun 25, 2024Changes to custom primitive data properties for instanced meshes placed in the editor work in-game but are not otherwise reflected in-editor. ...
Is there a particle smoke that matches the world lighting 100%?
UE - Rendering - Architecture - Niagara - Oct 14, 2024Niagara particle sprites with a Translucent Material are glowing in a completely dark area. This issue is also observed with the deprecated Cascade particles. Particle brightness is also dependent ...
Edit Condition does not work properly when the structure is used as a key for Map
UE - Framework - Blueprint - Jun 19, 2025When the structure is used as a key for Map in Blueprint, Edit Conditions does not work properly. It will be updated when you move the focus to a different location(ex. a component) and click the v ...
Nanite Skeletal Meshes Invalidate VSM
UE - Rendering - Features - Nanite - Sep 17, 2025Nanite Skeletal Meshes will always invalidate VSMs, even with their Shadow Cache Invalidation Behavior set to Rigid. This does not match the behavior of non-Nanite Skeletal Meshes. ...
Distance Field Ambient Occlusion artifacts when using dynamic resolution
UE - Rendering - Features - Mar 12, 2026Distance Field Ambient Occlusion produces artifacts when using Dynamic Resolution at lower framerates. ...
Substrate Unlit editor view mode renders black with Blendable GBuffer
UE - Rendering - Features - Shading Models - Mar 18, 2026When using Substrate materials with SUBSTRATE_GBUFFER_FORMAT==0 (Blendable GBuffer), the Unlit editor view mode renders completely black. TopLayerData.UnlitViewBaseColor is never populated in the bl ...
Expand Node crashes engine
UE - Gameplay - Blueprint - Dec 4, 2014The engine crashes when after right-click > Expand Node on any composite node. Crash Report: [Link Removed] ...
GPU Particle Collision changes based on Normal Intensity on Colliding Surface
UE - Graphics Features - Jun 18, 2015Increasing the intensity of a Normal Texture on a colliding surface will cause the collision of GPU particles to behave strangely, looks to be falling through floor, when you are using a Constant Ac ...