Can anyone explain why the game randomly feels the need to kick you back to the home screen despite being in the middle of a battle just because you switched to another app for a moment?

I'm just venting a bit, but this has been a problem since the release of Idola. I have 0 issues running the game (minus the occasional crash to my Android home screen/desktop) but on occasion I'm in the middle of a quest/Idola battle and say I get a text I want to respond to, so I switch over to my messages app, respond to the text, switch back to Idola and I see in the top right corner 'connecting...' and back to the games home screen I go.

The fuck Sega. Care to refund me the few hundred stamina I've lost to this bullshit? At least when the game crashes mid-battle I can choose to resume it.