Summary
When configuring the material slot in the editor on an entity based mesh, the material will not show in-game and fallback to the default world grind material
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
Other
Steps to Reproduce
- Create a mesh
- Create a custom material + material instance
- Place an entity with a mesh_component
- Apply the custom material instance to the mesh
- Push changes
Expected Result
The material should show in-game.
Observed Result
The material does not show in-game, however it works fine on actor based meshes.
Platform(s)
UEFN v37.40 and v37.50
Additional Notes
In the images you can see that the red material shows on the mesh, but that material is provided by Fortnite. The black and yellow materials do not show in-game as they are custom materials.
Here are also some game logs from today’s investigation:
[2025.10.09-10.40.32:431][738]LogStreaming: Warning: LoadPackage: SkipPackage: /vz_game_copper/VZMaterials/mi_interactable_sign (0x4E008B77353C0063) - The package to load does not exist on disk or in the loader
[2025.10.09-10.40.32:432][738]LogUObjectGlobals: Warning: Failed to find object 'Object /vz_game_copper/VZMaterials/mi_interactable_sign.mi_interactable_sign'
It’s strange that the material is flagged as non existing, but it seems to work fine for the actor based meshes (see next image).
TEMPORARY WORKAROUND: Re-assign the material in code at runtime!
