I am not worried about anything I was just pointing out that there is still a potential problem. I understand that for knowledgeable users like average joe on hacker news is probably common sense to disable such features if he wants "full privacy".

Anyways; it's not safe by default which should preferably be.

Firefox can autofill password fields if you choose to remember them yeah. There is a platform bug filed for making these container specific or choosing not to auto populate when they were saved in a container.

The test pilot experiment is really to help us to figure out how people are using containers.