I had an issue yesterday that appeared to be related to "continuity" "hand off" between my iPhone 5S and iPad Mini (both running iOS 8B2). When I double-clicked the home button on my phone to access the task switcher, there was an extra screen to the left of the home screen representation that showed an iMessages issue on the iPad MiniR. Despite that being on the phone, there was no indication of a "continuity" event on the iPad, and no clicking, tapping or scrolling would activate anything on either device. I also know that when that screen showed up in the task switcher, the battery meter on the iPhone 5S was dropping like a rock. I did a screen shot, captured my logs and then rebooted the iPhone. The issue disappeared and has not returned.
I also submitted the event to Apple via the Bug Reporter function within the dev portal. Curious, though, if anyone else has seen this. And for those experiencing really bad battery life, you might check to see if that’s your issue.