I have a Google spreadsheet that contains hyperlinks to files stored on my Google Drive using a HYPERLINK formula.
Opening the spreadsheet and hovering the cursor over the link when logged in my GSuite account, I can see a thumbnail preview and that's pretty neat (if you feel lucky, try yourself on this example sheet)!
However, this doesn't happen for my collaborators in the same GSuite org, and indeed if I open the same spreadsheet with another account with similar access rights (on the spreadsheet and on the image) I don't see any thumbnail preview.
Not seeing thumbnails occurs on Firefox 77.0.1 (64-bit) on Windows 10 and Linux 5.6.15-arch1-1 but also Edge 83.0.478.50 on Win 10 in incognito mode, when not logged in. The reproducible example above was created with my personal Gmail account. For this example specifically, the cat image is shared with the option "Anyone on the internet with this link can view". See here for an example:
You can try the example I took the screenshot of here. Is this feature currently available on selected accounts only, or am I missing something?