repro steps
- create new empty blueprint
- Create the parent static mesh
- create an basic shape or another static mesh
- Copy the previously created mesh (Ctrl+C)
- Paste the mesh(Ctrl+V)
- Save the level
Only the first of spheres and/or cube are created components the rest are copies cause is easier to have an copy of already scaled object than creating a new one an scale it individualy. so this is how i found this happens.
Im using 4.7.3 And cant check if still happens in newer versions (im using an 3G limited conection for now)
will be updating on 2nd may.
hope its usefull