At first I thought it doesn't work. Turns out when you just create a tab it's not in a container yet in contrast with the situation when you create new tab in a container manually. But when you go to a website it is changed to the corresponding container of the first tab. Works well for me!

This is exactly what I needed ! Thanks to the developer!

At first i didn't think that it worked until I realized that the PINNED tab farthest left is considered the First Tab and not the first full sized tab. Keep this in mind if you have pinned tabs as I do. I can live with that, but I wish that there was an "Ignore Pinned Tabs" Setting

Perfect for project management. Should be default for Firefox.

Great addon!

This is so close to being perfect. Only issue I'm having is when waking a tab that was in a different container and put to sleep with Auto Tab Discard. When it's opened a new tab is created, leaving a blank window tab behind.

It works fine when a sleeping tab in the windows main container is woken up. So this is a minor minor problem, otherwise awesome!

Does exactly what it says it will do, this is very useful for my workflow where I separate personal and school stuff by window.

Edit: The following issue has been fixed after a PR on Github!
The only issue I have is that if the first tab in a window is a container, it prevents me from opening "default" (not sure if that's the right term) pages such as settings and the add-on manager. This is already logged as Issue #8 on Github.

Works well so far, thanks for this!

This is perfect, thanks! Exactly what I was looking for.

This is exactly what I needed. I was about to switch to Chrome for work purposes when I discovered this. Thank you, thank you!

Anyway, one slightly annoying detail that I'd like to report: On Windows, after pressing Ctrl+T to open a new tab, the URL bar gains focus for a split second but as soon as the container is set it loses it. I wish I could just press Ctrl+T and start typing the URL immediately. Now I have to press Ctrl+T, then press Ctrl+L or F6 and then I can start typing.