Static mesh created from bsp will not properly duplicate if original copy of mesh in viewport is used

If a bsp is turned into a static mesh and then the original mesh in the level is duplicated, it will register as duplicated in the world outliner but the mesh will not appear until re-assigned in the details pane.

1. Open Editor (any project)
2. Create a bsp box in viewport (lmb bsp box in placement>bsp mode and drag to viewport)
3. In details pane, select "Create static mesh">ok
4. Alt+LMB transform widget and drag to create a duplicate of the mesh

Results:

A copy of the mesh is created but will not be visible until the mesh is re-assigned in the details pane.

Expected:

A duplicate is created and the mesh is visible in viewport.

StaticMesh created from Brush not duplicated properly on alt-drag [4.8p4]