Possibility to registration with captcha value opened in another tab

Test Step:

1. User should be logged out
2. Go to main page, right click on Sign Up link -> Open in new tab
3. Open Sign Up dialog in the first tab
4. Go to the second tab and fill all fields with valid data except captcha
5. Fill Captcha in the second tab with captcha value from the first tab, click 'Sign up' button

Actual result: Message about successful registration received, user is registered
Expected result: User should receive a warning message below captcha text field about wrong text

Note. Bug reproduces also in preprod