First of all I want to say that I was very happy to find out about all these new features that came along with version 3. And I am really glad that I see a lot of good effort from the Simplify3D team. Keep the good work.
Now to the bug. I created a G-code (attached here) and I edited to check about this new feature (extract while wipe). While I was looking through the code, I came across a section that is definitely a bug. It is everywhere through all the code and it starts at line 26976.
I don't think that it affects the actual code, but it is creating a lot of more kb I suppose.