On my M1 with recent apps hidden, Notes in the recent apps, and just Safari open…
1. When I drag to show the Recent Apps, they stay visible until I tap (not drag) anywhere on the screen.
2. I can drag Notes from the Recent Apps list to make a Safari + Notes group.
3. Tapping on the three dots to access “Add Another Window” will hide the Recent Apps list.
So what is the point that you are trying to make here ? Repeating the same thing again as you made in your first post