Yes, it was that (demo fixed). Sadly I don’t remember what changed in between those versions in mediasoup-client (3.11.0 and 3.12.2) that makes Firefox VP8 simulcast incompatible with latest mediasoup server.
Please don’t pollute this topic with unrelated issues. This topic was about a temporal bug that was introduced in the demo application and was fixed. It was not about Firefox not being able to connect ICE.
You were literally told to:
Please create a new entry with all the details of the issue and an STR.
You are not creating a new entry (you keep posting in this same unrelated topic), and you are not providing any STR. You are not even saying if the same scenario works for you in the official mediasoup-demo or not.
Please don’t be tempted to answer on this topic. Open a new one with all the required info. The fact that Chrone works in your setup doesn’t invalidate everything we have told and requested here.