Bug Polybrush doesn't paint on custom mesh

I have the model of multi-polygonal round shape surface and polybrush doesn't work on it at all:

• I don't see gizmos
• Prefabs are added on mouse hold but their positions has wrong values (like X:-294823.1, Y:-455853.9, Z: -839806.1)

Works fine with standard unity primitives only. The only recommendation I found on the forum is to use .obj files, not .fbx. Exporting model as .obj didn't solve the problem.

Attaching .obj and .fbx in .zip archive