Missing arrow for sub menu

I’m having an issue with one of my menus not showing the arrow to point towards sub menus. It’s definitely not checked as hide arrow and I’m at a loss as to why it’s not showing but the menu item above it does have the arrow pointing towards the sub menu.

It’s off the shop tab on the main menu of my site.

Can anyone help, please?

Thank you!

The page I need help with: [log in to see the link]