After Joomla Update to v3.8 Captcha no longer works

After a successful upgrade to Joomla 3.8, the captcha in Chronoforms v4 is displayed, but always leads to a validation error if correctly entered.

You can test the error here:
https://www.sogas.ch/kontakt-und-lageplan.html

With reCaptcha it works:
Here we have reCaptcha, and it works.



So there must be an issue with the captcha-plugin of Chronoforms v4. Could you please have a look at this, as we have many sites running with the standard captcha from Chronoforms?

Regards
Bernhard

Hi Bernhard,

As posted in anther topic, its a Joomla issue:
https://issues.joomla.org/tracker/joomla-cms/18066

Best regards,
Max