Issues with hamburger menu subcategories layout and interaction

I’m having some issues with the hamburger icon menu on my site.

When you enter the menu, the main categories appear correctly. Inside those categories, I have subcategories. I recently added a new subcategory, and the idea is to add more over time.

The problem is with the layout and behavior of the subcategory (“Aerospace & Defense”). I positioned it as shown in the screenshot, but the editor does not allow me to place it where I want. My goal is to display the subcategories more like the McKinsey example (in a separate area, with more space and a clearer layout).

Additionally, when I switch to Preview mode, I can’t click on the subcategory because it disappears when I try to hover or move toward it.

I’m not using any custom code, and I would like to keep it that way. I believe there must be something I’m not configuring correctly in the editor.

Working in
Wix Studio Editor