Unreal Engine Issues
Unreal Engine Issues
Long thin spinning objects take too long to stop spinning
UE - Simulation - Core - Jun 5, 2023See the SpinningObjectStability test map in the Physics Sandbox. [Link Removed] It's not clear if this is a bug or a side effect of some of our solver shortcuts (e.g., omission of the precession te ...
PlayerStart in LevelInstance are not loaded early enough in PIE as Standalone/Listen
UE - World Creation - Worldbuilding Tools - Level Instances - Aug 8, 2023Non-spatially loaded actors in a Level Instance are not embedded properly when entering PIE. This issue does not happen in a cooked build. ...
AmbientOcclusion doesn't work properly on orthogonal projection camera
UE - Rendering Architecture - Sep 27, 2023Details Panel - ShowOnlyInnerProperties does not work in nested structs unless the outer struct also has the metadata
UE - Editor - Workflow Systems - Nov 27, 2023The current implementation for inlining struct members is setup in a way where we start with the outermost struct and only recurse into any child structs if it contains the ShowOnlyInnerProperties m ...
Path Tracer Normals Issue
UE - Graphics Features - Path Tracer - Oct 29, 2025Path Tracing normal maps reflect light differently than Lit, and do not look accurate. Also observed in //UE/Release-5.6, CL: 45232827 ...
AHUD::DrawMaterialSimple does not render on ANdroid device when MobileHDR is disabled
UE - Platform - Mobile - Oct 23, 2015After cooking, If user installs same project which contains drawing material via DrawTile function in HUD, is not displayed in es2, with MobileHDR off (verified on android device) DrawTile script i ...
Aim Offset points update position when the scale of the graph is changed in Persona
UE - Gameplay - Jan 14, 2017This is a regression from 4.14.3 at CL 3251583 ...
Animation Sequence Keyframe icons missing after adding a Keyframe
UE - Anim - Runtime - Jan 13, 2023Regression: Tested in UE5/Release-5.0 at CL 20979098, this issue occurs there as well so this is not a regression. This issue occurs with any bone and setting any amount of Keyframes on any frame. ...
Naming a category for a function the same name as a function can cause the My Blueprints tree to display incorrectly (making the category heading look like a function)
UE - Gameplay - Blueprint Editor - Jan 19, 2018Spawned particles on the surface of a static mesh in Niagara get offset if the actor is anywhere but the world origin
UE - Niagara - Jun 11, 2018Particles that are spawned using the surface of a static mesh will be offset from the systems placement in the world unless it is at world origin. Working as expected in 4.19 CL# 4033788 Found in ...