2. You'll need to enable these about:config flags to get the container options: https://news.ycombinator.com/item?id=29347284#29348057. Also, removing the extension and then enabling those flags still reset my container settings to the defaults.
I use the site-to-container mappings, so I reinstalled the extension.
1. The extension provides the ability to map certain sites to certain containers (more: https://support.mozilla.org/en-US/kb/containers#w_what-you-c... #5). If you use this feature, as far as I can tell, you need the extension.
2. You'll need to enable these about:config flags to get the container options: https://news.ycombinator.com/item?id=29347284#29348057. Also, removing the extension and then enabling those flags still reset my container settings to the defaults.
I use the site-to-container mappings, so I reinstalled the extension.