When within an AutoFilter range with an active filter, rows may be hidden.  In
this case copy does not work as expected.  I noticed this when my spreadsheet
was corrupted.

I suspect this is a bug because Calc appears to mostly behave the same way as
Excel in this regard.  Here are the cases I checked:

Excel

1) Hide rows, Delete or copy to a range that spans the hidden rows, the cells in
the hidden rows are affected
2) Auto filter, Delete a range that spans the hidden rows, the cells in the
hidden rows are not affected
3) Auto filter, Copy to a range that spans the hidden rows, the cells in the
hidden rows are not affected

OpenOffice

1) Hide rows, Delete or copy to a range that spans the hidden rows, the cells in
the hidden rows are affected
2) Auto filter, Delete a range that spans the hidden rows, the cells in the
hidden rows are not affected
3) Auto filter, Copy to a range that spans the hidden rows, the cells in the
hidden rows ARE affected

Given that case 2 is the same with Calc and Excel, I suspect that case 3 should
also be the same.  I think Calc is not behaving correctly in this case.