Have anyone seen a orange microphone logo open on the dynamic island, and after you click on it opens a accessibility app with the black screen?
Accessibility opened as an app, with the black screen.
Can you please share which version of iOS you're running?
Also, please file a bug report using the Feedback Assistant tool to upload additional information about your issue including logs from the device, https://developer.apple.com/bug-reporting/
After you create your report, reply here with the Feedback ID so I can take a look