Unreal Engine Issues
Unreal Engine Issues
Material Functions are incorrectly listed in the Layer Asset list
UE - Rendering Architecture - Materials - Feb 3, 2026Since UE 5.7, Material Functions are included in the Layer Asset list of the Material Layers of an instanced material using material layers. It is also possible to drag and drop Material Functions ...
Material Analyzer misreports static params for Material Layers
UE - Rendering Architecture - Materials - Jan 20, 2026When analyzing materials that use Material Layers, Material Analyzer reports that multiple Material Instances “share the same static parameter array” and therefore recommends reparenting so that onl ...
Optimize closing the Material Editor and Material Instance Editor
UE - Rendering Architecture - Materials - Jan 15, 2026[Link Removed] We always need to build texture data which requires building debug view mode shaders to do some rendering to get texture densities. Can we find another way to do this? Can we at le ...
Translucent deferred decal materials look different when setting specular attribute directly or via constant node
UE - Rendering Architecture - Materials - Nov 28, 2025Translucent deferred decal materials look different when setting their specular material attribute directly on the material node versus setting it via a constant node ...
Changing MaterialQualityLevel causes a crash due to a ShaderMap mismatch in UniformExpressionCache
UE - Rendering Architecture - Materials - Nov 26, 2025A crash may occur when changing the MaterialQualitylevel via Scalability due to a race condition. The issue occurs because in ScalabilityCVarsSinkCallback(), when it creates the FGlobalComponentRec ...
Material Instance Platform Stats don't update when Material Layer parameters are changed
UE - Rendering Architecture - Materials - Oct 14, 2025The instruction count appears to update properly if the whole asset editor is closed and reopened. ...
Crash when opening a texture or editing its properties after stopping a preview in the material editor
UE - Rendering Architecture - Materials - Sep 5, 2025When a texture asset has certain properties edited, its PostEditChangeProperty() method calls to UTexture::NotifyMaterials(), which triggers a recompilation of materials that reference it in their m ...
Invalid GUIDs on new material instance parameters cause overrides to break on base param rename
UE - Rendering Architecture - Materials - Sep 3, 2025When a parameter value is assigned on a newly created material instance (constant or dynamic) using Set***ParameterValueInternal, the parameter’s ExpressionGUID is left invalid (0,0,0,0). Parameter ...
Material Particle SubUV Sample does not work with Tex Object
UE - Rendering Architecture - Materials - Aug 29, 2025The Particle SubUV Sample node uses its own texture object reference instead of the one provided by the texture object node. ...
Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected
UE - Rendering Architecture - Materials - Aug 24, 2025Copying a grouped MaterialInstanceParameterDetail property that has spaces on it's name does not enclose it in double quotes, and later pasting won't work as expected. The licensee noticed this in a ...