Model Geometry mode in SOP class on MacOS.
When I use the geometry mode for SOP, the “select & Transform” function does not work.
I can not select points or faces to work or delete.
On PC the same function on the 2018.27910 version works 
TouchDesigner Build 2018.27910
Model Geometry mode in SOP class on MacOS.
Model Geometry mode in SOP class on MacOS.
This is a known issue currently as it is not supported on macOS. The entire picking system needs to be re-written for macOS and we have not been able to address it yet.
For other known issues and macOS differences, refer to this article:
docs.derivative.ca/MacOS