I know there are addons, but would be nice to have something native built in instead of having to trust an addon. Current method without addons that I know of is creating a container then deleting it, but that’s not as convenient and pretty cumbersome.
Is there any about:config functions that might unlock what I want?
@ImaginaryFox I see. That’s reasonable. I also had Temporary Containers in my head, but didn’t suggest it as you wanted a native solution. Didn’t even notice how old last update was! Unfortunately from my view and additional research, could not find a solution for you. It would be nice to have a “Open in New Temporary Container for Tab”, that is managed temporarily and automatically deleted after closing tab.