Just checked, and I'm on 2018.50.6... there's another set of numbers and letters afterwards, but not sure if it's relevant. I'll reiterate that I did try the browser after each software update, and it kept acting the way it was before: about 50/50 chance that it was unresponsive and required a 2finger reboot to work. Then one day, unrelated to a software update, it worked. Not sure what was done, but I do think that it was related to repeated bug reporting on my behalf. When I first got my car, the LTE would very frequently cut out and require a 2finger restart to fix. Emailed back and forth with Tesla, and one day it was just quietly fixed... again no software update involved. So there's got to be something on their end that they can tinker with to fix these bugs...