Updated to Firefox 63, and HH no longer works. No matter what I do, I always get a picture of Bunny with the following message "Hi! It looks like something went wrong in creating session datas. Please click here to re-create it!"

I tried everything. I disabled all new firefox protections, but still the problem is there.

The only workaround I found is play the game outside of Nutaku frame. e.g. Play HH on its own website, and not inside nutaku, which makes firefox treat HH as 3rd party content.

Anybody else is having these issues?