[Bug - EPIX2, Marq2, F7?] Long press of back button from a App does not terminate it properly

In step 2, how are you going back to the watch face?  Which device?

I can only repro this on an EPIX 2 and Marq 2 but I suspect it repros on F7 as well.

It repros with other 3rd party Glance/Apps

Long press of Back button

Try short press of back.  Long press of back is a hot key that is often assigned to "clock" - the watch face - so you're not really returning to the normal watch face.

Yes, short presses on Back works fine.  But a long press should work as well.  Seems like a bug in the current set of watches since it works fine on an F6

No you're doing the long press hot key.  You can also do the long press when recording an activity and get to the "Clock/Watch Face", but the activity you were running keeps running.  The hot key is different.

You can change the hot key so the long press does something else - turn of the flash light or take a screen shot for example.  And there a bunch of different hot keys.

Why does it work as I expect on all other devices?

Only the higher end devices have hot keys.

On a device like a fenix, you go to setting>system>hotkeys if you want to configure them/remove them.

The I2 a long press doesn't take you to the watch face and with the f6pro, the hotkeys may default differently.  

Everything you are saying sound normal to me, based on different devices and their options.