I use to be able to keep 2 different browsers, Safari and Chrome, or for that matter 2 pages notes and maybe calculater open on my computer screen at the same time to make things easier for me to do what I need to do.
Thanks Mootsryder
[Edited by Moderator]
MacBook Pro 16″, macOS 26.1
Disable System Settings > Desktop & Dock > Stage Manager.
Organize your Mac desktop with Stage Manager
Turn Stage Manager on or OFF
You can quickly move back and forth between Stage Manager and traditional windows to use the method that’s best suited for the work you need to do.
On your Mac, do one of the following:
> System Settings, then click Desktop & Dock 
in the sidebar. (You may need to scroll down.) Go to Desktop & Stage Manager, then turn Stage Manager on or off.
in the menu bar, then click Stage Manager 
to turn it on or off.If you can’t turn on Stage Manager, choose Apple menu > System Settings, click Desktop & Dock in the sidebar, go to Mission Control, then turn on “Displays have separate Spaces.”
Windows no longer stay open side-by-side
