seems simple enough could also be a feature to request to some of the header modifiction addons that they would be able to take container names into account
@Seratil > I am aware there are add-ons that try this, but none have worked for me yet.If you want, you can give this one a try https://addons.mozilla.org/firefox/addon/load-background-tabs-on-select
@PlzMakeFeature I made an addon a while back that seems like it could help. Have a look if you want.https://addons.mozilla.org/firefox/addon/startup-bookmarks
> transfer the bookmark to the left sidebarAh, alright. TBO, that's not what i thought this idea was about. I think there is already an idea for thathttps://connect.mozilla.org/t5/ideas/allow-us-to-add-individual-bookmarks-to-the-sidebar/idi-p/111759...
