08-31-2018, 02:28 PM
Hmm, this is an interesting issue, and I strongly suspect it lies within the Illustrator SDK itself. Our method to convert an artwork point to a document view point is a very thin wrapper around the appropriate SDK call; we essentially just call it directly without any mentionable overhead. If this is a major bug for you, I think it would be worth it to test in other versions of Illustrator, and via the SDK alone (i.e. take one of Adobe's official sample plugins and reproduce the problem there, if possible). Then you can submit a bug for it to Adobe themselves on their forums.