Publish not working on Firefox after update to FlashphonerWebCallServer-5.2.859

[SLM]

Publishing does not work anymore after updating the WCS server version to 5.2.859.

Steps to reproduce:
1. Use 2 way streaming example on demo
2. Click Connect button (result ok)
3. Click Publish button (fails)

An error message appears:
FAILED
Browser error detected: The object can not be found here.

Viewing streams is not a problem.

In Chrome no problems publishing or streaming.

 

[Max]

Hello!

Checked your problem in Mozilla Firefox browsers version 83.0 and 84.0
In browser version 84.0, the publishing issue does not appear.

If you have a browser version lower than 84.0, we recommend you to update Mozilla Firefox to the latest version.

 

[SLM]

It's 83.0.

No problem updating my own browser, but it would be better if the bug was fixed so we don't have to force everyone to update their browser.


/Edit:
Strangely enough, I can now publish in FF83 (did not update yet), so I suspect it's a combination of factors.

 

[Max]

No problem updating my own browser, but it would be better if the bug was fixed so we don't have to force everyone to update their browser.

The bug seems to be on browser side. We just reworked SDP negotiation on server to conform the specification more strictly in latest builds.
Anyway, Firefox is updating automatically for the most of its users.