Jibri SIP Video Gateway content compatible?

I see that Jibri can be used as a SIP Video gateway to join Jitsi Meetings.
What is the current behaviour when content, such as screen share is used?

Does the SIP device receive a second stream, have the primary stream replaced or not see the content at all? Also what happens when the SIP device tries to share content?

It can receive just one video stream …