From looking at the Mesh Distance Fields documentation:
Only supports Static Mesh, Instances Static Mesh, Foliage, and Landscape (Heightfield). Foliage must be enabled with Affect Distance Field Lighting from the Foliage Tool settings.
From looking at the Mesh Distance Fields documentation:
Only supports Static Mesh, Instances Static Mesh, Foliage, and Landscape (Heightfield). Foliage must be enabled with Affect Distance Field Lighting from the Foliage Tool settings.