Expanding the references window

Hi,

I am using Word 16.51 for Mac. 

I'd like to see the full details of my citations without hovering over each item. On my MacBook I can see the full details when I expand the citations window but on my iMac (see screen shot) I can only see partial information for each item even when I expand the citations window. Is there a way to fix this?

Thanks

Yaniv