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Is there some sort of bug where app tabs don't work with private browsing? My pinned tabs don't show when I start Firefox in private mode.

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I recently updated to Firefox 5.0, and I was pretty impressed with the app tabs. I usually use Firefox in private browsing mode, but recently I changed that to make use of the history function. However, I decided to change it back to permanent private browsing, and apparently my pinned tabs all just disappeared. Is there anyway I can change this?

I recently updated to Firefox 5.0, and I was pretty impressed with the app tabs. I usually use Firefox in private browsing mode, but recently I changed that to make use of the history function. However, I decided to change it back to permanent private browsing, and apparently my pinned tabs all just disappeared. Is there anyway I can change this?

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App (pinned) tabs and Tab Groups (Panorama) are stored as part of the session data in the file sessionstore.js in the Firefox profile folder.
If you use Private Browsing mode then no session data is stored to disk.