Custom cursor is behind dropdown menu

Hey guys, so I have a little problem. I created a custom cursor that is basically an image that follows the mouse position (I need to control it with a Xbox controller aswell, that's why I use an image). It has its own canvas with a higher sort order than my UI canvas, to make sure that it stays above UI elements. The problem is the dropdown menu. The options are rendered when I click on it, what causes that my cursor is behind it. Is there a way to avoid that?

Thanks in advance.