Not my fault, really, but here you go:
https://board.eclipse.cx/viewtopic.php?p=7539#p7539
https://board.eclipse.cx/viewtopic.php?p=7542#p7542
https://board.eclipse.cx/viewtopic.php?p=7593#p7593
There was this r3dfox bug and the author (thought he) found the solution in one of LibreWolf's special "policies", but while he was "there", he decided to also implement several other LW policies/settings into r3dfox; this is implied in the bolded wording of every new "LW-ified" r3dfox release, e.g. 128.14.1esr:
Testimonies of breakage can be found in the linked Eclipse Forum thread and in the GH issue tracker (recent open/closed issues), e.g.
https://github.com/Eclipse-Community/r3dfox/issues?q= is%3Aissue state%3Aopen sort%3Aupdated-desc
https://github.com/Eclipse-Community/r3dfox/issues?q=is%3Aissue state%3Aclosed sort%3Aupdated-desc
What made me furious the most was this ; but, as I wrote already, I'm only speaking for myself here; it may well be that the majority of the r3dfox users are still very happy to have got new releases with the latest security patches, courtesy of Mozilla ..
As you often write, "moving on" ...