All the incognito browser windows share the same “session” in Firefox. So say you open an Incognito window to browse Facebook or something, then you open another Incognito window, this new incognito window is linked to the previous incognito window, meaning you are logged into Facebook at that new Incognito window as well. This is because, as I explained before, all the incognito windows share the same “session”
The only way to clear incognito window is to close ALL of them and then create a new incognito window. You dont have to close the main non incognito Firefox window though, just close all the incognito windows. Then open a new one, now your previous session is destroyed and you are new again.
You may know it but its not that common knowledge as it should have been
I think what you are looking for is Containers. FF uses containers to wall things off from each other, whereas Private sessions are still all sandboxed together, as you discovered. I know this is quite different from how Safari, for example, handles things, but you can accomplish the same things, just a little differently.
This isn’t well known?
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That would be a nice thing to have
There’s no “would be” about it, this is just an actual feature of Firefox
https://support.mozilla.org/en-US/kb/how-use-firefox-containers
edit: unless you mean specifically disposable ones for which there is an add-on
https://addons.mozilla.org/en-US/firefox/addon/temporary-containers/
For reference, private mode in Safari protects you from this.
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Maybe it’s because I have a programmer mentality but this is exactly the behavior I would expect, otherwise the "open link in new window"won’t work reliably, all popups would fail and you couldn’t “tear” off a tab in a new window
You are someone who knows how Browsers work so you think this way.