By default, when you snap an open window to the side of your screen or desktop on Windows 10 an additional window on the side will appear that shows you “what you can snap next.” I found this feature annoying; However, I can see where it can be very useful for many users.
There is a screen snap option preset in Windows 10 which actually allows you to stop the multi-window screen from appearing when you lock, dock, or snap your open window to the left or right side of the screen.
This guide will show you how to change the “when I snap a window, show what I can snap next” option and remove the multi-window screen when you snap a window on Windows 10.
1. Open Windows Start menu and go to Settings > System > Multitasking.
2. In the “Snap” section at the top of the window turn the dial off next to “When I snap a window, show what I can snap next to it.”