How to make gmail standard work in Icecat (v.17) - JavaScript problem

I want to try Icecat browser (I like having different yet similar browsers, so I want this beside Firefox).

To install

sudo add-apt-repository ppa:gnuzilla-team/ppa && sudo apt-get update && sudo apt-get install icecat -y

but then:

But Java is enabled

the list of plugins is the same in Icecat and Firefox, where gmail works fine.

what could be the matter?

1 Answer

Icecat comes with an enabled extension (GNU LibreJS) that "blocks nonfree nontrivial JavaScript while allowing JavaScript that is free and/or trivial".

Disabling the addon solves the problem reported here.