I'm on Wayland via Fedora, and we use Zoom for company video conferencing. About 2 months ago they released a new version that started supporting screen sharing on Wayland. Works perfectly.
Edited for grammar and to add this:
My point being is that it's slowly but surely getting better and better.
Which version are you using right now? I have the latest one and it does not allow me to share anything else than a white canvas.
Do you launch zoom somehow differently? For me it behaves like a regular XWayland app
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.
Edited for grammar and to add this:
My point being is that it's slowly but surely getting better and better.