It sounds like the customization may have affected the theme’s menu structure or CSS styling. I would recommend checking whether any custom code, menu plugins, or recent theme updates are conflicting with the original layout. Clearing cache and testing with a default theme can also help identify the source of the issue.
I’ve run into similar situations when organizing large navigation menus. One thing that helped was studying how other sites structure their menu sections to keep navigation simple and user-friendly. Hopefully you’re able to narrow down the cause and get everything displaying correctly again.
