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With containers you can retain the info. InPrivate stuff is gone once you close the browser (bar any nationstate spy).

It's also useful because InPrivate windows share a cookie jar in Firefox.

> InPrivate windows share a cookie jar in Firefox

Wow, should it be a bug? Im Safari user, have little FF experience.

It certainly defied my expectations. Chrome is the same. All I can think is that they wanted an inprivate window's tabs to share a jar and that then gets kinda complicated with popping tabs into their own window, putting them back, flicking between those accidentally while dragging a tab, etc.

Looking at the docs it appears that Safari gets around this by just having a separate jar per tab? On desktop at least, mobile appears to be shared.

Just checked mobile Safari, looks not shared. Open private tab, login to Amazon. Open another private tab, go to Amazon - not signed in.

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