Teacher using Teams- view students on a second device

I am a teacher and use 2 devices when teaching. My iPad is used when I share my screen on my computer. This has allowed me to still see all my students when sharing the screen. Recently, this option changed on my iPad. It won't let me remove the item being shared, thus I don't have a full view of all my students. There must have been an update that changed this. Does anybody know of a way to see all students on iPad during screen sharing from another device?

I share my computer screen and still was able to see my students on the iPad until early November. Now I can only see the shared screen on my iPad. 

Thank you