Racks in Cubase 8.5 issue.

My Specs:

Cubase 8.5
Mac OSX Yosemite 10.10.5
MacBook Pro (Retina, 15-inch, Late 2013)
Processor 2.6 GHz Quad Intel Core i7
Memory 16 GB 1600MHz DDR3

Details to recreate issue:

Scrolling with the trackpad in the racks stops after a few scrolls and only when I move the cursor its starts scrolling again. There’s a link to a video showing this. I know you can’t see me scrolling but please believe me, when you see it stop scrolling in the video Im still scrolling up and down on my trackpad. https://www.dropbox.com/s/mhjo0yyylan9qbw/Media%20Bay%20Issues.mov?dl=0