1.Open 3 windows of nautilus or any application.
2. Click on the application's icon in the launcher to activate spread mode.
3. If you want to close one of the windows, you have to click on its preview, than close it when it has focus. However, we should be able to close it directly in spread mode (like in gnome shell) by clicking on a close button in the upper left corner of each preview.
I attached a picture of how its done in gnome shell.
1.Open 3 windows of nautilus or any application.
2. Click on the application's icon in the launcher to activate spread mode.
3. If you want to close one of the windows, you have to click on its preview, than close it when it has focus. However, we should be able to close it directly in spread mode (like in gnome shell) by clicking on a close button in the upper left corner of each preview.
I attached a picture of how its done in gnome shell.