The bug has been identified and fixed for FreeBSD: "For WebRTC services developed by Google when WebRTC code in Firefox is forked from an old version of Chromium (64 for FF76/68)? Besides, ESR was also affected due to --with-system-nss passed via Mk/bsd.gecko.mk." https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246363
Bug 1636781 Comment 6 Edit History
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The bug has been identified and fixed for FreeBSD by Jan Beich. Looks like WebRTC and --with-system-nss issue. MANY THANKS JAN! :-) https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=246363