Ever since switching from chromium-freeworld back in Fedora 37 to in the main repo Chromium https://teams.microsoft.com/  meeting presentation / video doesn't work. It expands and "frames" the window like it's showing something, but you just get a grey wall. I have the WebRTC pipeline flag enabled and RPMFusion "multimedia" stuff installed as per:
https://rpmfusion.org/Howto/Multimedia

but it just doesn't work. Same issue with Chromium on Tumbleweed, so I don't think it's a Fedora specific issue, but there was something in freeworld that was lost. MS Edge for Linux via the MS repo works fine. All the "test" sites I could find for verifying screen sharing via WebRTC seem to work fine, so it's almost more like a codec issue.

Reproducible: Always

Steps to Reproduce:
1.Install Chromium
2. Join a meeting in teams.microsoft.com 
3. Have someone share their screen to you / video call
Actual Results:  
blank "frame" where the video should be

Expected Results:  
See the presentors desktops

Operating System: Fedora Linux 39
KDE Plasma Version: 5.27.9
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11
Kernel Version: 6.6.3-200.fc39.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 12 × Intel® Core™ i7-8700 CPU @ 3.20GHz
Memory: 31.1 GiB of RAM
Graphics Processor: AMD Radeon RX 550 / 550 Series
Manufacturer: Dell Inc.
Product Name: OptiPlex 7060