Seems to leave behind site data for every temp tab and site visited. Maybe Strict mode incompatibility? Whatever the case I've got dozens of listings reporting 0 Cookies but site data is still being stored.

Great extension. This extension is the reason why Firefox is unique to all other browser compared to privacy.

I use this every day, it's invaluable for debugging websites as multiple users (e.g. where users interact) and Chrome has nothing like it - keep up the great work!

I like this add-on, but I have the same problm with the web.de's Mail-Check add-on like Firefox-User 13897684. Is there a way to get this add-on work with Temporary Containers? I tried to work with "Exclude Target Domains" and "Ignoring requests to". But nothing seems to work.

Best thing since sliced bread. You can create tons of independent containers. Especially useful with sites like Google news where I open it in one container then every news item in its own container. When I am finished reading the item, the container and all its cookies disappear.
Super for multiple logins on a single site simultaneously.

Beautiful security tab feature.
I recommend not using Auto mode, but using Alt+C to manually open tabs when needed.

Unfortunately this add-on blocks usage of web.de's Mail-Check add-on (https://produkte.web.de/mailcheck/#.suche.brandlink.mailcheck): when trying to login to one of the configured mail accounts only an empty tab comes up with title "Placeholder for extension post request - tmp ". Is there a way to disable this add-on for specific sites? When I disable Temp Containers all is fine. Fwiw: I use this in conjunction with Multi-account containers add-on.
Other than that seems to work fine.

A couple of suggestions. Please add more subtle colors (preferably a color/density picker) for the urlbar icons/number and the tab bottom line. Needs a nice gray option. Also, a more subtle, less bold tab bottom line - it's too thick! And, the urlbar icons are a bit too large. Shouldn't be any larger than the container number. Is there a way to not have a urlbar icon showing - just the container number? Thanks.