Accessibility: Make dropdowns for main menus fully keyboard-accessible

I am reaching out regarding an accessibility issue I encountered while auditing the BuddyBoss theme/platform, specifically related to keyboard navigation of dropdown menus.

During my tests, I was unable to open or navigate submenu items using only the keyboard. This presents a significant barrier for users relying on assistive technologies or who cannot use a mouse. In contrast, the default WordPress Twenty Twenty-Five theme provides an excellent example of accessible dropdown behavior: submenu items are fully reachable and operable via keyboard, including proper focus handling.