Yes, I started with a fresh 3.5 image. No upgrades. Pi2.
I did a clean install right now just to make sure. Still does it. This time I left it. After a few minutes of having a black screen, it boots back into kodi.
Edit..well it’s not THAT fresh..I do have the snesdev script installed and that adds 30sec to shutdown in jessie, but I believe quitting kodi shouldn’t boot me back to kodi..