I couldn't pass google captcha, and all urls open a google search.
If you put
in the OmniBox are you getting a Google CAPTCHA?
The server is very busy right now and I don't want to reset it while there are so many people trying it out. When things quiet down I'll replace the default search provider in an attempt to avoid these prove-you're-not-a-robot-challenges.
For now if you want to get started with a URL in the address bar you could try another search provider such as DuckDuckGo:
FWIW I consistently get 1 CAPTCHA (usually traffic lights) and pass every time.
I cannot explain the discrepancy you experience.
Edit: Thinking about this, I think it is related to the User-Agent and platform pass through. When the load dies down I will test providing the same UA and navigator platform for all clients.
I have a hunch that one signal CAPTCHA uses is if the UA/platform is different to the browser.