Operating system: Ubuntu 18.04
Graphics card: GTX 970
Broken: 2.80.44, 024f5ba2bdba, 2019-02-12 11:32
Short description of error
When you use Verts Instancing, it seems that Blender creates more objects than it should.
Exact steps for others to reproduce the error
Select the Cube, duplicate it and scale it down (enable XRay View for visibility)
Parent it to the first Cube.
With the first Cube selected, go in the 'Instancing' Panel of the' Object' Tab in the 'Properties' Area. Select 'Verts' option.
You should normally now have 12 Objects, 80 Verts and 60 Faces in your 3D View. However, the Polycount displays 75 objects, 584 Verts and 438 Faces.
Here is the .blend file:
And a screenshot: