make sure your jolla is really shut down after locking it... mine rewakes sometimes after performing the lock-swipe... however, it takes about 1-2 seconds to rewake and some people have experienced this too... now, if you lock it and it rewakes while slipping it into your pocket, your fingers might be performing tasks already, naturally, as you have to touch the phone somehow... i don't say this is what happens but it is a possibility as my jolla didn't wake up on this by now... not even while jogging...