EasyRSS doesn't remember what I've read after restart

Each time I restart my browser I get all news I've got so far as "unread". The solution to this problem is to restart browser and immidiatly "read all" feeds (so I don't have to check everything manually) and keep browser open 24/7 (works with hibernation/sleep).
I don't think this behaviour was there during first few weeks I've tried this addon but I might be wrong.