It turns out Android M thinks your Android Wear app needs to take a nap every once in a while.
It should be no surprise to anyone out there that the Android M Developer Preview is not 100% ready for public consumption. We’re not expecting a Nexus running the finished version of this OS until the fall, but that doesn’t stop folks from giving the preview a quick flash and checking things out. In doing so, a few folks — including our TWiT friend Jason Howell — noticed Android Wear didn’t always behave as expected when connected to the preview.
It turns out this has more to do with Android M’s new App standby functionality and the Wear app not being ready for M than anything else. It also means there’s an easy way to stop this from being a problem.