I upgraded to iPadOS 26.1 beta v2 yesterday and suddenly I can’t use share screen in apps like GNeet, Discord, zoom etc.
Can’t share screen in 3rd party meeting apps
It’s a known issue in iPadOS 26.1 beta — screen sharing is currently broken in most third-party apps. For now, only FaceTime and native apps work properly. You’ll need to wait for the next beta or revert to the stable version.