I'm working on a MailKit extension and I'm getting a full Mail crash every time I click the Primary Action button in my message banner. I have filed a feedback: FB22513160 Apple's own unsubscribe banner successfully presents a confirmation modal when its primary action is clicked, demonstrating that this flow is intended to work. That behavior does not appear to be accessible to third-party extensions via the documented EMessageSecurityHandler API. Or if it is and I'm missing something, I'd love to know. Thanks!