Plugin not compatible with "wp_login_form()"

Using the function wp_login_form() it would display the wordpresses login form, but Math Captcha does not display.

However, Math Captcha still checks for the Captcha so trying to login with wp_login_form() always fails since there is no field for the user to input.

I would suggest either adding in the field for this function or removing the captcha check when this form is submitted.

https://wordpress.org/plugins/wp-math-captcha/