"share" broken

I placed a file in my local “Creative Cloud Files” directory, waited for sync to complete, and then went to the Adobe Creative Cloud web page, navigated to the directory, and used the pop-up menu to “Share”.  I get a spinner, but it never finishes.

I tried reloading the page, restarting the browser, and deleting the file and syncing a new one.  Nothing helps.

This was working fine earlier today.