Unreal Engine Issues
Unreal Engine Issues
[Datasmith] [Sketchup] Material maps wrong when using colors or applying materials directly to grouped object
UE - Editor - Content Pipeline - Datasmith - Exporters - Sep 30, 2019The problem occurs when a material gets added to a group inside sketchup directly instead of individual faces before grouping. The materials that are just colors are doing the same thing. This was ...
Movie Render Queue does not render letterboxes to exports with sensor aspect ratios between 16:9 and 1:1
UE - Anim - Sequencer - Jul 28, 2021There is a discrepancy between how Movie Scene Capture (Legacy) and Movie Render Queue handle letterboxing for sensor aspect ratio's that do not match the export resolution, which seems to be a bug ...
[AI] Navmesh does not get built inside of navmesh bounds that is in a non-activated data layer
UE - AI - Navigation - Dec 13, 2022WP navmesh generation does not appear to work if a navmesh bounds volume is in a data layer. The navmesh will build if the data layer is activated when the build paths is started, but it will not lo ...
Stale VSM pages after HLOD transition
UE - Rendering - Graphics Features - Shadows - May 23, 2024Virtual Shadow Maps do not invalidate pages when HLODs replace meshes. This can lead to inconsistencies between the geometry and the shadows, which can cause artifacts as pages are invalidated. ...
Invalid Landscape Normals at component boundaries and subsections In Packaged Build
UE - Graphics Tools - Terrain - Oct 31, 2025In UE 5.6, heightmap texture compression was introduced. The original implementation did not consider duplicate pixels along subsection and shared textures (multi-component) boundaries. As a result, ...
Crash when saving after resetting Instanced array element via Property Matrix on placed actors
UE - Editor - Nov 21, 2025When an Actor Component contains an Instanced UObject array marked EditDefaultsOnly, adding a new element to the Blueprint defaults correctly updates the Blueprint and its own Property Matrix. Howev ...
Math Expression Node produces error if it calls a variable located within a hidden variable category
UE - Gameplay - Blueprint - Jan 29, 2016The math expression node in blueprints does not recognize variables that have been hidden within a blueprint category. ...
first struct variable not shown by Intelisense
UE - Foundation - Core - Feb 18, 2015When invoking a custom struct, the first listed variable will not appear in the Intelisense window. ...
LIVE: Reflection Capture are not working with moveable directional light on mobile
UE - Graphics Features - Nov 3, 2014When a Directional Light is changed from static to movable, the materials in the level will appear dark. ...
Landscape incorrectly renders when camera clips through foliage while Playing in Editor
UE - LD & Modeling - Terrain - Landscape - Dec 1, 2014Landscape sections disappear for a very brief time when the player camera clips through foliage quickly. ...