Mine showed a drain while plugged in to the continuum dock and I just dropped a percent while on standard charger. Earlier today after the update, it showed 100% when I knew it shouldn't have been. So, right now my assumption is that the battery is calibrating. Hope to see a difference by this time tomorrow. At least not dramatically draining, especially while charging.
Edit: Sitting here watching it, it continues to go to 100% then back to 98% while charging. I am sticking with my original thought right now. Calibrating.