I do remember running Word on an Am386DX-40 and later an i486DX2-66 and there was an issue that wouldn't be a problem with faster hardware; the widow/orphan control happened live so if you made an edit, then hit print, there was a race condition where you could end up with a duplicated line or missing line across page boundaries. Since later drafts tended to have fewer edits, I once turned in a final draft of a school paper with such an error.