The problem is in draw_line_collection, and it looks
OK, I just committed a "fix" for this problem. There is no elegant
way to do it in backend bases because of the way collections use
offsets and offset transforms. So I just hacked it up to do the
transformations as before and pass an identity transform off to the
backend in using the newstyle API. Another argument for implementing
the methods in the backends....for a rainy day.