Bug 510955

SUMMARY
When the Plasma Integration is installed and enabled in Firefox, background filters like the blur effect cannot be used and only the input video from the webcam can be used.

STEPS TO REPRODUCE
1. Install and enable the extension
2. Enter to Teams and start a meeting
3. Before joining, in the preview screen you can already check that the video does not work when using any background filters.

OBSERVED RESULT
The webcam is enabled (my particular webcam Logitech C920 has some blue leds when is used), it is detected by Teams, and it works just fine without any background filters. Trying to enable any filters like a blur background results in an empty video stream. For the user it looks like an empty video, for other participants a black screen is shown.

EXPECTED RESULT
Background filters should work with the plasma extension.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux 
KDE Plasma Version: 6.5.0
KDE Frameworks Version: 6.19.0
Qt Version: 6.10.0
Kernel Version: 6.17.4-arch2-1 (64-bit)
Graphics Platform: Wayland
Processors: 24 × AMD Ryzen 9 7900X3D 12-Core Processor
Memory: 96 GiB of RAM (93.4 GiB usable)
Graphics Processor 1: AMD Radeon RX 7900 XT
Graphics Processor 2: AMD Radeon Graphics
Manufacturer: ASUS

ADDITIONAL INFORMATION
Perhaps related to Bug 507991

Also, for some reason my extension is stucked at version 1.9.1, but in the repo I see tags for versions 2.0 and 2.1 (https://invent.kde.org/plasma/plasma-browser-integration/-/tags). Manually forcing to check new updates does nothing.