Thank you for reaching out to us today! I can see what you mean on the menu dropping down in the side column. It is letting me scroll down so long as my mouse is over the side column, but if that is not working, you should be able to actually click and drag the slider on the right of the column or alternatively, pressing the down arrow key should bring you into the options of the menu.
Thank you for contacting us today. If scrolling while your mouse is over the menu or using the arrow keys isn't working, You are also able to press the space bar after clicking the drop down menu and that will scroll down for you.