When I close a tab, and try to find it in the recently closed tabs in the history, some i just closed, and without opening even a few others, they do not show up in the recently closed tabs list, while some I closed the day before are in there even when I filter to "Today" and that after" using Firefox for less than an hour and only had. For one I think Today doesn't do that but rather the last 24 hours or similar. It actually has been a problem for a very long time. I can find most of them in the "Show all History", but that defeats the purpose of the recently closed tabs option. I am using 143.0.4 (64-bit) AKA archlinux - 1.0, on Arch Linux I update every few days. In my case today it was a Duck Duck Go search results page.