Changing font size of combo box dropdown list?

I have a combo box that is using a custom widget to change the font size of the active option. However, when clicking on the combo box to open the drop down list, the displayed options have a font size that’s much larger than that displayed in the combo box. Is there a way to set the font size in the drop down list to match that of the combo box itself?

Never mind. It seems this is an issue within the editor. Running the game outside the editor allows the combo box to function as expected.