Okay, so I have the app and forerunner 235 for 7 days. In 2 of these 6 nights, my battery on my S7 Edge was drained.
Night to today ( http://imgur.com/a/6DglA ): Charged to ~97% right before going to sleep. no Charging overnight
2 Nights before today ( http://imgur.com/a/0iecK ): Drain while being CHARGED overnight. So it basically even beat the charger in draining the battery.
This never happens over the day, just sometimes in the night kills your smartphone so I can say goodbye to my alarm clock etc. I saw on reddit that some users had the same issue and missed meeting etc, so what can solve this? Uninstall and sync on their PC like they did?