Yes, I see exactly this if I select by using click and drag.
However, this is not the case when I single click a surface knowing that another surface is behind it. With "select through" enabled or disabled only a single surface is selected. Ex: make a cube. Single click the top surface. With "select through" I'd expect the both the top and bottom surface to be selected.
The preceeding can easily be worked around and I wouldn't be writing if this was the problem because the difficulty I'm experiencing would be fixed. But, in this case with X-Plane the X-Plane.obj is exported as two single sided surfaces very close together. I want to delete the outside "skin" but when I single click this surface both layers are selected, or only one layer, apparently at random. This is identical to the cube example above except that the layers are very closely spaced.
Blue side up,
Bob
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