Excellent Add-on, exactly did what I was looking for all over the internet!! this function is missing in the original multi-container extension. Thank you, Kirill.

This makes Multi-Account Containers so much better. Thank you for making this.

Hi Kirill, this is an excellent add-on. Please keep working on it. It's very useful. I hope more people find and use this nice add-on. This feature is very helpful !!

It works, but has a troublesome side effect where tabs that are configured to open in a specific non-default container are duplicated into two tabs.