I am having the same issue on multiple drawings.
It seems to happen when I try and edit a default hatch or have a hatch that is set to world units and scale it up really big.
I have the issue on both mac and pc
My Windows machine spec:
Vectorworks Fundamentals 2017 SP2 | Windows 10 64bit | i7 4790k 4.0GHz | 16GB 2133MHz | MSI GTX 970
My Macbook spec:
MacBook Pro (Retina, 13-inch, Late 2013)| 2.4 GHz i5 | 8 GB 1600 MHz DDR3 | Intel Iris 1536 MB | macOS Sierra 10.12.2
Thanks in advance