When opening the team site, the menu on the left doesn't contain "Shared with us".
First you have to open Documents, after which the menu item "Shared with us" magically appears on the left.
It remains visible when going to the pages library "Pages" but disappears again when going to any of the other pages. The item only appears when opening a library?
Try to explain an end user they first have to open another library before they can find back the "Shared with us". Although the technical explanation can be trivial for most users this is pretty confusing.