In V6, when a point object in a block is at its block’s base point location, the point osnap won’t snap to that location of the block instance. V5 will snap to it.
In this example, a point object and the block’s base point are at the CPlane’s origin:
I have a small, high resolution screen, so my snap is at 30 pixels.
No, I did not include a Point object at the block insertion point.
I use the Point osnap to add a point object at the block instance base point.