https://github.com/concrete5/concrete5/pull/1813 adds the required attribute to the CAPTCHA input field. However, when saving the form block with the CAPTCHA enabled, this required attribute stops the changes being saved unless you preview and supply a value in the CAPTCHA field.
Merge pull request #1842 from JeRoNZ/master

https://github.com/concrete5/concrete5/pull/1813 adds the required attri...