I am having a problem with my category drop-down menu (please see the attached screenshot)... The problem is that there is a third blank column in the drop-down menu that should not be there. In my settings, I have selected that the menu should only have two columns, so I don't know why it is showing a third column. I have also made sure that every category name takes up only one line and does not flow over to a second line.
Any suggestions for how to fix this? (A Code Snippet fix would be my preferred option.)