when firefox reopens, the function shown windows and tabs from last time was not always current
when the webpage was turned by javascript to the next page. somehow the most current page was not being saved, stored, and synchronized. As the result, when firefox reopens, it only shown the first webpage (without being turned to the most current page)
for example: I was reading a book, and the first webpage was the following: https://www.xxbiquge.com/78_78323/70092.html
if the page was turned to page 2, it won't be memorized by firefox, except the first page.
I tried delete session_restore method, cleared history, content cache but non-worked.