Captcha does not re-generate itself if a user made mistakes in others fields

There is a problem that when a user didn’t fill out all fields correctly, the user will get error message. After correcting all mistakes the user clicks again “Ask Question” button and get error that capcha is incorrect, that heppens because the captcha didn’t generate new image, but the old one cannot be used to pass verification. The user needs to click “generate new text”, it will be difficult to post questions for reqular peoples who are not familiar with ReCaptcha.