Unreal Engine Issues
Unreal Engine Issues
Mutable Material Switch node not working
UE - Runtime - Mutable - Oct 7, 2026When using the Material Switch node in Mutable (UE5.8), I do not seem to get pins to wire in my Materials to switch between. Other switch nodes like Mesh Switch seem to work fine. ...
Mutable Chaos Cloth breaks when culling mesh affects mesh sections with cloth
UE - Runtime - Mutable - Sep 29, 2026Encountering an issue since we updated to UE5.8 where characters whose cloth mesh sections have vertices culled will cause mesh degradation in editor and crashes in packaged builds. There are two i ...
[Mutable] Morph Targets can be disabled in packaged builds when Mesh Streaming is enabled
UE - Runtime - Mutable - Aug 28, 2026When a Mutable mesh instance is created while the actor spawns at a distance, only the low LODs are generated, and the mesh is created with no Morph Targets registered. Later, when the camera approa ...
Mutable COIs built from ChildCustomizableObjects are engine only but do not denote that in anyway.
UE - Runtime - Mutable - Aug 10, 2026When creating a Mutable setup with nested Child COs, COIs can result with Editor-Only references, which will cause the COI not appear in the build manifest and the appearance to now spawn in game. ...
Mutable Dataless Generation - Regenerate Imported Models Crash
UE - Runtime - Mutable - Jun 8, 2026Crash when working with Dataless Mutable content. When selecting meshes in the instance, there is a crash in RegenerateImportedModels. ...
Mutable: Child parameters hidden when intermediate Object Group uses "All Options"
UE - Runtime - Mutable - Mar 31, 2026FCustomizableInstanceDetails::FillChildrenMap() unconditionally registers parent-child relationships via __ParentParamName metadata without verifying the parent exists in the active parameter list. ...
Mesh Reshape node with modified geometry from another skeleton explodes mesh.
UE - Runtime - Mutable - Mar 31, 2026Using the mesh reshape node with seperate meshes produces a broken mesh. An example project: Most if not all clothes will be originally made to fit the Average Male body. I'm trying to morph a tu ...
Having a block in layout before switching to overlay strategy affects the overlay output.
UE - Runtime - Mutable - Mar 5, 2026Issue: If "Resizable" Layout Strategy contains a block, it will influence the "Overlay" Layout Strategy. Expected behavior: When using "Overlay" Layout Strategy, it should disregard whatever the "R ...
Textures from Data tables do not work with Clip with UV Mask.
UE - Runtime - Mutable - Jan 23, 2026Currently this workflow fails to generate in mutable, but using static paramters for textures do work. ...
Unable to use AnimInstance metadata when using Passthrough Skeletal Mesh Component.
UE - Runtime - Mutable - Jan 22, 2026With the standard non-passthrough flow you set the AnimBP on the SkeletalMesh node itself. With the passthrough SkeletalMeshComponent node I see no place to set the AnimBP. While I can set this manu ...