Dragging a DeX window toward another screen stops working: use the current window menu

Identify the old gesture and new software

Note whether the old action was dragging an app window toward the left or right edge to place it on the other screen. Record the current One UI version and actual dual-display arrangement. A gesture no longer performing that action is different from the external monitor losing its signal.

Samsung’s FAQ attributes this particular change to the One UI 8 design update. Keep the software transition with the observation instead of assuming that an older video tutorial describes the current window manager. Verify that the intended app is still open before attempting to move it.

Inspect the app window’s own menu

For the documented newer interface, Samsung directs users to the More drop-down at the upper-left of the app window. It names snapping left, snapping right and sending to the other display as alternative window-management actions. Choose the action that matches the actual task and supported setup.

Snapping a window within a screen is not the same as transferring it to another display. Observe the destination after choosing the command. If only one display context is available, record that limitation rather than interpreting the absence of a transfer target as a streaming-service sign-in failure.

Check playback after moving the window

Once the window reaches the intended screen, confirm its size, controls and programme state. A display move can be successful even if the application needs another play action; likewise, a programme can keep playing while its window remains on the wrong display. Keep those outcomes distinct.

For help, include the Galaxy model, One UI version, receiving screens, old gesture and current menu result. Preserve any unsaved work before disconnecting hardware. This evidence identifies a documented interaction change and separates it from an unavailable display, an app-specific external-output limit or a later media-playback problem.

Sources and further reading

• Samsung DeX FAQ and One UI 8 changes
• Samsung Australia current DeX model, mode and software qualifications