How to get double screen in quickmenu when using gesture-mode?
What you mean by double screen.
If you want split screen then swipe from middle and hold for few seconds, now drag and drop app(which support this) to upper screen.
Use gesture to pull up task switcher. Hold finger on app and drag it to the top of the screen.
OnePlus Design: No detail is too small to be perfected
by Pete, 2019-09-17