The Store Switcher show only current store

[andrea_p]

Hello,

I created 2 stores in Magento 2.1 (US store & EU store) and added to layout the Store Switcher, so user can change manually the Store if he want, but appears only the current Store:

 

Someone can help me? I do something wrong in the Stores configuration? Or use the store_switcher element in design.xml file isn't the right way to switch manually between different Website/Store ??

Thanks

Andrea