The visibility issue is a bug and we have logged it internally. For the copy issue I'd suggest renaming the symbol in all locations you find it, we have also fixed this in the case where you so a Save As so the names in each location follow each other.
Sorry but that symbol name does not appear to be editable unless I am doing something wrong.
You cannot double click text to edit , nor with properties up there is no editable field with the name in it.
When placed in a schematic it is not visible.
But those names still do not match & I see no way of editing them?
Robert OK after more playing around, yes if you do type something else in name property where
the xxxxxx.1 symbol name is then click then type again it does rename it.