Unreal Engine Issues
Unreal Engine Issues
[StateTree] StateTree fails to transition to the next state in child states when parent state contains some tasks
UE - AI - StateTree - Jun 12, 2026StateTree fails to transition to the next child state in a tree where the parent state has a task such as Debug Text which does not influence state completion. The ST atttempts to transition from Le ...
Nanite Landscape Visibility Layer Crash
UE - Graphics Tools - Terrain - Landscape - Jun 10, 2026Upon saving the level after creating the landscape and painting visibility, the editor crashes. When you restart the editor and load the level, you are greeted with a warning in the upper right corn ...
Material Layers cannot be re-ordered by dragging in the Material Layer Parameters tab
UE - Rendering - Architecture - Materials - Jun 9, 2026Material Layers cannot be re-ordered by dragging in the Material Layer Parameters tab even though there is UI for dragging the rows and the rows appear to be draggable. ...
Editor crashes when Material Layer visibility is toggled after removing a Material Layer in Parent
UE - Rendering - Architecture - Materials - Jun 9, 2026When a Material Layer is removed from a Parent Material, the Parent Material updates correctly in the viewport, but any Child Material Instance do not update correctly in the viewport until the Chil ...
Adding/Removing a Material Layer on a Parent Material doesn't propagate to Children correctly
UE - Rendering - Architecture - Materials - Jun 9, 2026When a Material Layer is added to or removed from a Parent Material the layer changes don’t automatically propagate to Child Materials correctly even if the Parent Material is saved. The Child mate ...
Toggling Material Layer visibility in Parent Material doesn't propagate to children
UE - Rendering - Architecture - Materials - Jun 9, 2026When Material layer visibility is toggled on the Parent Material in a Material hierarchy, only the Parent’s layer visibility is affected, the children are not. Saving the Parent material has no effe ...
Sequencer - if you set the Take Separator to - rather than _ the New Take naming will mess up
UE - Anim - Sequencer - Jun 9, 2026When using a non-default take separator (eg "-") the "New Take" option produces a malformed proposed name for the take. ...
World Bookmark can't be saved when a Private Data Layer is "collected" by the UDataLayerEditorState
UE - World Creation - Worldbuilding Tools - Data Layers - Jun 9, 2026The World Bookmark system cannot properly handle Private Data Layer. The current state can make them unusable since the Bookmark might not be saveable. ...
[USD EXPORT] USD Exporter does not export subsequence data from the master sequence
UE - Editor - Open File Formats - Jun 9, 2026As described in the steps to reproduce, when exporting a selected binding somwehere in a sequence hierarchy into usd, the export yields an empty result when using 'selection only' option. The export ...
Nanite: unused VertexInterpolator node disables Opacity Mask (material renders opaque)
UE - Rendering - Architecture - Jun 8, 2026On Nanite meshes, placing a VertexInterpolator node in a material graph without using it (unconnected, or routed through a disabled static switch) silently breaks the Opacity Mask and the material r ...