Just got an AWS this evening, been enjoying it so far. One thing I've noticed though: the taptic engine doesn't seem to work after it sits for a while. If I go into taptic settings and adjust the slider up and down several times it will start working again, but it does nothing at first. If I put the watch on mute I'm not getting notified. Yes, I've made sure my phone and iPad are locked to test this. Is this a known issue, or did a I receive a dud?