A game window keeps snapping while you move it: identify the Windows layout overlay
If a desktop card game changes size when you drag it, watch for the Windows Snap overlay before checking the game’s display preferences. The trigger is often the position of the window during the drag.
Read the setting
Microsoft documents that dragging a window to an edge can show a translucent placement preview. Dragging it toward the top can open the Snap bar. Snap Assist may then show thumbnails for the rest of the layout.
Compare a specific example
Compare moving the window a short distance in the middle of the screen with dragging it to an edge. If the overlay appears only at the edge, choose whether to complete the placement or move away before releasing the pointer. If resizing happens without an overlay, record whether the game itself changes modes.
Frequently asked question
Where do I review the overlay setting?
Windows 11 lists separate Snap options under System > Multitasking, including the Snap bar and maximize-button flyout.