Structured model outputs (Responses API) returning invalid JSON 80% of the time

May provide this with a delay as I am on travel for the next 3 days just now. Just to clarify, are you able to pass this on to the relevant development/support team? I was unable to contact/find an email where I could get support on this directly from OpenAI. I got in touch with customer support, but that seemed to be only an automated agent with links to docs.