Change application on Reset !
Look, while driving home, I have remembered that STM32L072CZ has dual bank boot capability, so this could be achieved by changing dynamically the the BFB2 option bit.
This could be a cutting edge solution !
Back to the first one, the pb could be that we jumbed directly to the App2’ main.
So, could you verify that 0x08019F40 is really the App2 Reset Handler Address ?