You should be able to continue iterating on a design by copying the HTML from the iframe in your browser when you have your design selected (even if it’s visually broken) and dropping it into a new chat, but might be misunderstanding what you mean by “prevents the page from loading”.
You should be able to continue iterating on a design by copying the HTML from the iframe in your browser when you have your design selected (even if it’s visually broken) and dropping it into a new chat, but might be misunderstanding what you mean by “prevents the page from loading”.