Xcode 9 and 10 generate the different results when using the same code

Hi,

I found a weird problem of CoreML when I changed to Xcode 10. For the below project which uses the SSD+MobileNet to detect the objects from the camera,

https://github.com/vonholst/SSDMobileNet_CoreML

I got huge different results when I opened and ran the project with Xcode 9 and 10 respectively.

Anyone knows the reason?

Thanks!