Zoom not working on small dataset

I tried this dataset https://docs.google.com/spreadsheet/ccc?key=0AspZRjIECCvPdGE0S3NIRzR0OW4ycDFVeU0wWmhDM1E&usp=drive_web#gid=0

And although it displays fine, the zoom does not seem to work.. do you think this is a one off bug or is it to do with the small database size?
