Hi! I've upgraded to the pre-release, but am still unable to search Google Drive either through the built-in web search or through the custom option noted above. In both cases, I briefly get the following generic search URL:
https://drive.google.com/drive/#search
Which quickly resolves to:
https://drive.google.com/drive/#my-drive
Which just lands me on the main page for my Drive account.
Thanks in advance for anything you can do to help!