Sadly I'm not able to test this since I'm not running Fedora and GNOME. I'm using sway.
Interestingly enough, Zoom change log does not seem to mention anything related to Wayland support: https://support.zoom.us/hc/en-us/articles/205759689-New-Upda....
Thank you for your comment, will try this in GNOME some time.
With the previous version I had the same thing, only allowed me to share white canvas.
Here's the process hierarchy:
Besides installing the new RPM, I haven't done anything differently.