Now on the one hand I'd say, ok, its not google's responsibility to try to have websites/non-standard browser configs set ups actually work with their web pages...
On the other hand, I'm sure the kind of security people google is looking for all surf the web with standard browser configs and permissions enabled...
And as the other commenter has pointed out, I know its radical of me, but I would have thought the "What is the google CTF" section should contain text which answers "What is the google CTF".