I notice this bug is still unresolved 3.5 years on - NIM092999: The Near 3D tool outputs inconsistent results when c..
This seems quite a long time - do I need to recalibrate my expectations?
Is there an alternative method for calculating nearest distance/angle? - I really only need it for 2D features but I have Intermediate licence with Spatial Analyst so Near 3D is what's available.
I actually get mostly good results but there seems to be some errors and I'm not sure if the fault is the tool or my understanding.