Hello. I experience a problem that occurred 2 days ago. Firefox seems to ignore my preferences of opening previous windows and tabs, also it ignores pinned tabs. Some of websites disappear from the history (let's say i opened few windows to check if tabs will be saved by firefox, closed browser, opened it after few minutes: tabs are gone, history has only few of websites that were open. I tried to look for the problem by myself but failed. I will be grateful for your reply, thank you in advance.