Jacob,
Welcome to the Cayenne Community!
I thought I had noticed exactly what you described here last night while I was working with @frederic here-
So I wanted to try and replicate exactly what I thought I saw and what you saw. So I re-imaged an 8GB uSD card and went for it. So I started with a new image of 2016-05-27-raspbian-jessie.img and did the usual localisation housekeeping and loaded a new instance of Cayenne on a RPi3b. I already had the circuit built with the MCP3008 pin 10 (CS/SHDN) jumpered into physical pin 24 (GPIO8/SPIO_CEØ_N) on the RPI as can be seen in this photo with the brown jumper.
I then added the MCP3008 to the RPi in Cayenne as indicated in the below screen capture-
So I’m plugged into CEØ and I selected SPI Chip-Select 0 and low and behold it populated the Extensions window on CE1-
So, yup I saw what I thought I saw, and Jacob confirmed it! So we will pass this on to @bestes so he and the crack team at Cayenne can do what they do so well.
Good catch Jacob, and again welcome to the Community,
Ian