[irishsultan]

For your question about opting out: if you are not in the container that the site "always" opens in it will offer you a choice of opening it in your current container or in the default container for that site, at least it does for me.

What I would like is the option to assign a site to two different containers, so mail.google.com would not offer me to switch when in in Personal or in Work, but would give me the choice to open it in either when I'm in a default container.

[JosephLark]

I did get that as well. I'm confused why this is the default. I imagine it's just the learning curve of this feature, I totally understand why they have the need to spin off certain expected-default behavior to further extensions.

So I just told you to always open a site in a specific container, and then you're going to ask me when I next load that site starting from another container whether to open in the container I've asked the site to always be opened in. Why would my choice be anything except 'Open in <Preference> Container' and 'Remember my decision for this site'. Isn't that what I already asked you to do?

Why am I setting the same preference twice? It seems like the opt-out is there by default when I don't want it, and not there when I do.