Bug with xdg-desktop-portal /screencast on f33?

Can anyone else reproduce or provide more information for this report?

Steps to Reproduce:
install OBS from flathub-beta

 flatpak remote-add flathub-beta https://flathub.org/beta-repo/flathub-beta.flatpakrepo
 flatpak install flathub-beta com.obsproject.Studio

add “desktop screencast (wayland / x11)” plugin to the scene on OBS Studio = black screen

is working on f32

or try to run this script.py
https://gitlab.gnome.org/-/snippets/19/raw

error like:

PyGIDeprecationWarning: Since version 3.11, calling threads_init is no longer needed. See: https://wiki.gnome.org/PyGObject/Threading
  GObject.threads_init()
Failed to create session: 2