Unable to open "Select termbases" window for server-based termbase


I've recently encountered a strange error while trying to open server-based termbases. (Local, file-based termbases work fine). When I click on UseServer-based MultiTerm database, a window should appear to allow me to select the server, provide login credentials, etc.

However, this window (Select Termbases in the following screenshot) only appears in the background and is completely inaccessible. This prevents me from adding any server-based termbase to my projects.

I've updated to the latest version of Trados Studio, to no avail. 

Server-based translation memories work just fine.

Is this a known issue? Is there a fix? My ongoing projects can't proceed forward without functioning termbases.

Any help would be greatly appreciated. Thanks!