I've had my EdgeRouter Lite in for about a week now and have noticed that it will randomly reboot itself occasionally.
There doesn't seem to be a pattern emerging, it'll sometimes restart while editing the config on the CLI, or while committing a new config change. It will also just reboot whilst in a low traffic state (e.g. 6 am) or with high rates (e.g. online gaming sessions)
I've attached the config I'm running currently (passwords redacted out of course) just in case Ive set something up in an odd way that's getting it confused.
The router's running v1.9.0.