The problem is you are running at 200% scaling on a 1440p display. This gives you an effective resolution of 720p which is very low for modern standards. What physical size is your display as a 1440p display would typically be 27" and run at 125% scaling.
The UI is designed to fit 1024x768 screens and above once scaling is taken into account which leaves you very borderline on vertical height at 720p as the window has a min size of 1311x717 pixels