Cancelling a screenshare and not having system permissions has the same error message

[quuu]

When I .publish with "videoSource: application" to trigger the screen share prompt, whether I disallowed permission in my system preferences and try to screenshare (first screenshot), or press cancel on the prompt (second screenshot), they both throw the same error.

{"code":1500,"message":"OT.Publisher Access Denied: Permission Denied: End-user denied permission to hardware devices (getUserMedia error: NotAllowedError)","name":"OT_USER_MEDIA_ACCESS_DENIED","stack":"Error: End-user denied permission to hardware devices (getUserMedia error: NotAllowedError)

This makes it hard to give the user a warning and instructions on how to enable screenshare system permissions it could potentially be just them opening and closing the screenshare dialog. Are there other ways to detect whether there is system permissions or not to screenshare?

Using the underlying OT.checkScreenSharingCapability() method, it always returns "supported: true" even without system permissions enabled. It seems like that method just checks the browser version instead of if it can actually access the screen?