Casting in Mirror Mode does not send audio

[Aegor1998]

OS version: PopOS 22.04
Browser version: Firefox 106.0.3
Extension version: 0.3.1
Bridge version: 0.3.0

Description
I was trying to get fx_cast to cast a video from gogoanime.tel I had to enable screen mirroring because it wouldn't pick up the stream otherwise. I got the video to stream, but It is not passing audio to the casted device.

Steps to reproduce

1. Go to about:addons
2. Go to Extensions > fx_cast > Preferences > Show advanced options > Screen mirroring
3. Enable screen mirroring
4. Go to gogoanime.tel and selected a video
5. Cast to the a device
6. Sound should be coming out of a device the media is on, and not the casted to device

Expected behavior
Some documented way to pass audio over to the casted device.

Logs
No logs applicable

[hensm]

This is a known issue with screen mirroring.

Though, I'm able to get that site to work by whitelisting https://gogohd.net/*.