So maybe there two bugs here? One about half pixel offset, the other about forceful rasterizing of copy and pasted objects.
Related to the first: Bug #170356 “Suppress antialiasing artefact at the object boundary” Bug #170392 “Advanced antialiasing control & font hinting” Bug #561857 “[wish] new "boxmodel" for grid alignment (1pixel border issue)”
So maybe there two bugs here? One about half pixel offset, the other about forceful rasterizing of copy and pasted objects.
Related to the first:
Bug #170356 “Suppress antialiasing artefact at the object boundary”
Bug #170392 “Advanced antialiasing control & font hinting”
Bug #561857 “[wish] new "boxmodel" for grid alignment (1pixel border issue)”