Improve side-face detection
It's quite bad right now
we’re always working to improve the detection for different angles, occlusions, etc.
if you have any consistent examples where detection is failing, please share them via the “contact us” link at the bottom of the website https://www.microsoft.com/cognitive-services
I'm totally agree, the simple fact that the X axis is not yet available is really something you should work on as soon as possible. and yes I'll submit a Contact Us photo right now.
Any examples please send through the "Contact Us" link at the bottom of the website