When you register a new account Captcha (Screen) does not work.

1. Click to Sign up.
2. Fill form (username exists), click to button "Sign up".
The message: "User with the username already exists.".
3. Close "Sign up".
4. Click to Sign up.
5. Fill form, click to button "Sign up".

Actual result: Account is not registered. Message captcha: " You have entered wrong value from picture".

Expected result: Account as a registered.