Another demo site bug: Shop does not appear on the menu

Hello, I’ve installed several demo sites. However, none of those show the Shop in the menu. However, if I add /shop to the homepage, the shop page opens.

Is this behavior unique to my computer or the same behavior happens with your system?

Please advise whether this a bug and how to fix it, i.e.:
1. How to add the shop item to the menu
2. How to have the shop item added to the menu automatically with the demo site installation.