Creo is incorrectly tracking tip

Hi all

I have had a situation which is outside my normal turning duties, which I had to us a 16mm neutral triangle insert to machine a groove, we are machining without cutter comp, so the correct setup output point should be tip, but when I run the program in Vericut, the result is under cutting the groove, see below

now to get this to work properly in vericut, I had to alter the tools tracking point  to represent an X_OFFSET arrangement, see below.

This worked with the tool path generated by Creo.

I now set the TIP OUTPUT to X_offset , and reset the vericut tool to a neutral tip, and it works properly ??????

So Creo is treating the tip output as follows

TIP = X_OFFSET

X_OFFSET = TIP

This is a major bug for an engineering software to have. Has anyone else found this out.