Software cursor will not go beyond the native resolution of the monitor. This means that if the resolution for the game window is set to a resolution higher than the native resolution of the monitor the software cursor will stop part way across the game window.
Example: If the monitor has a native resolution of 1920x1080 and the resolution is set to 3840x2160 the cursor will stop in the middle of the the game window.
Expected: The software cursor would be able to move anywhere in the game window
Result: The cursor will not go beyond the native result for the monitor
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-45514 in the post.