The vast majority of Anti-virus companies we have managed to get whitelisted for. The main exception to this is Yandex which is also integrated in Opera. We are having ongoing issues with getting a response from this company, the next step is probably legal action but that's something we don't want to go ahead with at present.
Regarding firefox we are waiting to see how this plays out. They are using a 3rd party to provide data for the blocking who we have contacted. The anti-tracking by default is an unusual route to take as this will cause problems for half the internet which could potentially break a lot of sites. Firefox still accounts for 10% of browser traffic at present so we don't want to lose that and will do what we can to comply with their requirements where possible.
Update to v1.9.2 is pushed out. Release notes here:
https://jsecoin.com/update-release-notes-v1-9-2/