Nothing new, you have 5 posts for more than a dozen users on Chinese zentalk who are in your situation and for 50% of them the phone restarts, from the initial firmware to the latest this bug is still there. Don't worry, on the ROG5 you just have to activate/deactivate the airplane mode, Asus has taken a new step, the Rog5 bug may not seem to them to be penalizing enough.