Patches are being reviewed: https://github.com/jitsi/lib-jitsi-meet/pull/1062

Included: "Fix the order of the simulcast streams for Firefox."

Subscribe to this issue to keep track of things: https://github.com/jitsi/jitsi-meet/issues/4758

From the latest comments you can see that Firefox upstream is also improving things.

They're actively working on it - in the GitHub issue below, Jitsi devs have been engaged with the community, as recently as yesterday.

100% support for Firefox (and other non-Chrome browsers)

https://github.com/jitsi/jitsi-meet/issues/4758

You might want to try Janus Gateway instead. It works fine on firefox, and is stable and reliable.

https://github.com/meetecho/janus-gateway

I use it for quick meetings on Firefox and so far it works with the limited set of features I need, despite the warning.

Last week I could not manage to use it for a three-way conversation (after 1h of trying everything, and re-initializing the stuff several times). Sometimes the sound of one participant was missing, sometimes the video of one. When we got it to work for a subset of two people, the CPU of everybody was at 100%.

How come it works for me on Firefox? v70.0.1

Edit: got it, it's that particular feature still missing.

Did a 6 person meet last night, all with video, and I was on firefox, worked fine.