Need help for reproduction of a power mode bug

Hello

I have a Fenix 6x Pro Solar. Since I have this watch, there exists a bug with power mode but Garmin won't know something about this bug and assign blame to the 3rd party watch face developer. Otherwise they say, it's my specific watch and I have to replace it. But I'm sure, it's a software bug. So please help me to try to reproduce this bug on other watches:

  • Download a 3rd party watch face (not a Garmin one)
    • At first, use a standard Garmin watch face
  • Configure a power mode: Display: Time Out (so display will be switched off automatically when activity is running and display will switch on, when you have a look onto the watch)
  • Configure an activity
    • Use the power mode configured above
    • Lap key: Off
  • Start this activity
  • Wait for a while until display switches off
  • Have a look onto the watch: Display should be switched on
  • Press "back" button: Normal watch face should be shown
  • Press "back" again: Activity data screen should be shown
  • Wait for a while until display switches off
  • Have a look onto the watch: Display should be switched on -> so all is OK
  • Stop and discard activity

Now configure a 3rd party watch face and repeat the procedure

  • Start the activity
  • Wait for a while until display switches off
  • Have a look onto the watch: Display should be switched on
  • Press "back" button: Not your 3rd party watch face should be shown, but a standard Garmin one (this is OK, no bug, it's a "feature" - in my opinion maybe the reason for this power mode bug)
  • Press "back" again: Activity data screen should be shown
  • Wait for a while until display switches off
  • Have a look onto the watch: Display will not switch on anymore!
    • You can only make it running again, when you configure another power mode and configure again the old one

Thanks for your help

Dave