Chrome doesn't load untrusted SSL content in iframe

Question

Whenever I try to load a page whose SSL certificate is untrusted inside an iframe, Chrome 29 displays error page inside instead. Error code is ERR_INSECURE_RESPONSE.

For the same scenario, Firefox displays SSL warning in iframe with an option to ignore it.

Example: http://codepen.io/anon/pen/Glpdv

How can I force Chrome to display either a page itself or a dismissable SSL warning?

Answer 1

Open the iframe content in new window and accept cert. Then you will be able to open this also in iframe.