My forerunner 745 sometimes select the run activity but does not activate it. Then after around 5 min it goes into power save mode because I did not activate the activity and it needs to shut down the GPS to save power. All of this is causing a lot of vibrations and alerts. Does anyone know why the watch insists of selecting the run activity without activating it. Obs. I do not accidentally press the button. When I press the button it will go into the run activity without vibration (I have turned vibrations off) but when it automatically goes into run mode it does so by using vibration notification. Also moving IQ has been turned off.