In Windows 10 dual-monitor setup, when you try to move a window from one monitor to the other, the mouse sticks to the corner or edges and enables corner Snapping of the window.

Disable Sticky Corners with Non Stick Mouse

If you want to disable this behavior, you can use Non Stick Mouse for Windows 10.

Use this application to turn-off sticky corners in Windows 10 dual displays or multiple corners easily.

It is available from here.