I have been a Firefox user for years and use it on both my iOS and macOS. I know that once you delete/close a tab in private browsing, it goes away for good in most cases. However, on this occasion, I never closed or deleted any of my tabs that I have held for months and months organizing my tabs for years.

Today, when I opened my Firefox on iOS, all my tabs (both private and regular) were gone. And I cannot find a way to get them back.