When playing with keyboard and mouse, the UI elements of chests, etc are moved down in order to make space for the X button. However, that causes some issues, the space on the top is way too big compared to the small space at the bottom, and the text isn't aligned vertically in the middle as well. The issues are still there even when you're not playing with keyboard and mouse. I suggest either extending the UI box vertically or making the X button smaller.