Hello Frederic,
By default, the only information passed on to OpenAI is the Issue summary and the Issue description.
There is a box on the page to provide additional information and also to choose any other text field that you would like AI to consider while generating cases. But all these are optional and at your discretion.
At this point, the comments, attachments, etc. is not passed on to OpenAI as part of the prompt.
Hope this helps!
Regards,
Noopur