technically it seems like an odd glitch, I don't think there is anything that would call for a reboot, as long as i2c didn't need enabling as part of the process (which already flags a reboot message on screen).
if this proves a problem for others though, it's easy enough to enforce a reboot regardless, it's just a matter of turning a flag in the current scrip in fact, but I'm not a fan of forcing reboots just because I don't know any better.