We’ve introduced a new control scheme for Edit Mode as part of the Quality of Life changes in Update 13.
By default, players have been switched to the new controls, where the Left Stick moves the camera, and holding RT + Left Stick moves the cursor.
You’ll also find button hints in the bottom left corner of the screen in Edit Mode, which display these new controls.
If you prefer the previous control scheme (where the Left Stick moves the cursor and holding RT + Left Stick moves the camera), you can easily switch back to it in the Settings menu.