If i'm in any activity i cant back to home screen using "back" button. In 245 it works properly.
I have the same issue. There is a workaround though, you can hold the up button to get to the settings menu -> appearance -> watch face, then press the back button and you will be back on the home screen. Very clunky and unintuitive, they should at least add it as an option in the controls menu.
i have a 955, but i wanted to issue a warning...
unlike my 935, my previous 945LTE and now my 955, when exiting out to the watch face/glances using a hotkey shuts off the GPS radio. the activity keeps logging but the GPS is lost. i've given up fighting Garmin on this, but it's frustrating because i too like to use Glances while hiking yet don't want to lose tracking info.