Thanks, unfortunately it only prevents closing the app from the task switcher list when you press the close all button or swipe it away.
See: Reddit - Dive into anything
I have One UI 5.1 from Samsung on a A51 phone. I only tested the swipe away move, I didn’t want to close my current list because of remembering what todo.
It still worked even with the Good lock and Home up app from Samsung: I changed the Switcher to mini mode, to have a better one hand operation. Small trick to mention (I didn’t knew this until this year): double tapping the recent apps icon in the nav bar will switch between apps instantly.
Regarding the issue:
It will not keep it in memory either, I have set the developer options open in Settings. When I look at the Active services > tapping ellipsis > Show cached processes, you will find the cached processes (I have 2: around 140 MB, 40 MB) if you have Obsidian open.
When I open multiple somewhat heavy apps, browsers, messengers, it will push the Obsidian processes from the list, while I have the lock on.
When I tapped the Obsidian icon in the Switcher list, it had to start up, loading plugins, loading cache, loading vault, loading workspace etc.
GJ.