I have WP Multisite.
I have only two Sites. The main one, and a second Site as a subdomain ( EN.mydomain.com ).
The problem is, if I am in my main site, I can find both Sites under MY SITES menu.
But if I am in my Subdomain site, I can only see that second Site under the Menu, and more weird, it shows twice.

This is what it looks like from the Main Site.

This is what it looks like from the Subdomain Site.

The only one User I have, is assigned on both Sites as Admin. So it doesn’t look like a user setup.
If I deactivate Plugins for the Network, they do not look deactivated when I change Site.
Other than this, everything works great. But in order to switch between Sites, I have to type ( or delete ) in the URL the subdomain.

Thanks.