I’m running build 3207 under Mojave and it works fine all the time I’m at the machine.
However, I often find ST3 “missing” when I come back after being away for an extended period (enough for screen saver / sleep to activate).
Looking in the system logs for the last time this happened, I see:
Apr 16 19:46:53 Chriss-Macbook-Pro com.apple.xpc.launchd[1] (com.sublimetext.3.27740[29863]): Service exited with abnormal code: 3
This is a new install and has not had anything added to it.