Drill in rhinocam. Problems?

Hola. This is my first participation in this forum. I am Brazilian and currently living in Mexico. I use RhinoCAM and several other programs to generate toolpaths. and only now I found that in 3 different versions, 2.0, 2015 and 2016 in operations of drilling thatt use retraction, these movements appear retraction not in simulation and code processed not seems correct. Can anyone comment on this?

Retraction doesn't appear in the simulation, but gcode is generated correct with retraction. It's the bug, but only in simulation.